stem是什么意思_stem单词用法

双语例句

Stem cell research is supported by many doctors.
干细胞研究得到很多医生的支持。
《柯林斯英汉双解大词典》
The plant's stem is marked with thin green longitudinal stripes.
这种植物的茎上长有绿色细长条纹。
《牛津词典》
'Writ' is the stem of the forms 'writes', 'writing' and 'written'.
writ是writes、writing和written三个词的词干。
《牛津词典》
The main stem will extend to around 12 ft, if left to develop naturally.
如果让其自然生长，主干会延伸到12英尺左右。
《柯林斯英汉双解大词典》
He stooped down, cut the stem for her with his knife and handed her the flower.
他弯下腰，用刀替她割下花茎，然后把花递给她。
《柯林斯英汉双解大词典》
The administration is trying to stem the flood of refugees out of Haiti and into Florida.
政府正设法阻止大批逃离海地的难民涌入佛罗里达。
《柯林斯英汉双解大词典》
Austria has sent three army battalions to its border with Hungary to stem the flow of illegal immigrants.
奥地利已派遣3个营到达与匈牙利接壤的边境处，以阻止非法移民的流入。
《柯林斯英汉双解大词典》
The stem helps hold the roots up.
茎帮助支撑根。
When the stem dies, its hormone signal also ceases.
当茎死亡时，它的激素信号也停止了。
These spiral vessels are part of a banana plant stem.
这些螺旋状的脉管是香蕉植物茎的一部分。
Science is the solution to stem rust, not the cause of its return.
科学是根茎锈病的解决办法，而不是其复发的原因。
By contrast, the large zebra lives on the masses of low-quality stem material.
相比之下，大型斑马依靠大量的低质量茎材料为生。
People are saying that stem cells are basically going to be the new miracle drug.
人们常说干细胞将会是新的救命的奇药。
The first is an automatic, metabolic system whose control is centered in the brain stem.
第一种是自发的新陈代谢系统，它的控制集中在脑干上。
Toxic minerals would first be absorbed by roots but later relocated to the stem and leaves.
有毒的矿物质首先被根部吸收，然后转移到茎和叶上。
There's a lot of interests in obtaining stem cells from the blood of the umbilical cord on birth.
人们对从出生时的脐带血液中获取干细胞很感兴趣。
The good news for the field of stem-cell therapy comes from a paper published in this week's Lancet.
干细胞治疗领域的好消息来自本周发表在《柳叶刀》杂志上的一篇论文。
Different from the embryonic stem cell we talked about before, it's an example of an adult stem cell.
和我们之前谈到的胚胎干细胞有所不同，这是一个成人干细胞的例子。
Stem cell researchers have found a way to get perfectly usable stem cells from fully grown human beings.
干细胞研究人员已经找到了一种从成年人身上获得完全可用的干细胞的方法。
Many more students earn degrees in the STEM disciplines in developing countries than in the United States.
在发展中国家，获得 STEM 学科学位的学生比美国多得多。
In the last academic year, women accounted for more than half of all Stem postgraduates at UK universities.
在上一学年，英国大学所有 Stem 研究生中，女性占了一半以上。
She noticed there was a real void in quality STEM education at all levels of the public educational system.
她注意到，不同等级的公共教育体系都确实存在高质量 STEM 教育的缺失。
Why people are so excited about embryonic stem cells is because in nature they become all the cells of the body.
胚胎干细胞如此让人激动是因为它的天然功能就是分化成身体所有的细胞。
Arousal is at first general, with a flooding of impulses in the brain stem; then gradually the activation is channeled.
一开始觉醒是普遍的，在脑干中有大量的脉冲，然后激活作用逐渐被输送。
Native farmers were hostile towards the wheat programme because of serious crop losses from 1939 to 1941 due to stem rust.
当地的农民对小麦计划怀有敌意，因为1939年至1941年间小麦由于茎锈病而严重减产。
Recently, the UK National Stem Cell Network warned the UK could lose its place among the world leaders in stem cell research unless adequate funding and legislation could be assured.
最近，英国国家干细胞网络部门警告说，如果没有足够的资金和立法保障，英国可能会失去在世界干细胞研究领域的领导地位。
All my problems stem from drink.
我所有的问题都是酗酒引起的。
《柯林斯英汉双解大词典》
She tied a knot in a cherry stem.
她在樱桃梗上打了个结。
《柯林斯英汉双解大词典》
The cut was bandaged to stem the bleeding.
伤口进行了包扎止血。
《牛津词典》
He pointed at me with the stem of his pipe.
他用他的烟斗柄指着我。
《柯林斯英汉双解大词典》

短语搭配

stem cell

干细胞，骨髓干细胞
stem from

起源于
brain stem

脑干
drill stem

钻柱；钻杆；钻具
main stem

[美俚]干线；主街
valve stem

【机】阀杆

近义词

n. 干；茎；船首；血统

birth blood stock

vt. 阻止；除去…的茎；给…装柄

block dispute prohibit discourage

vi. 阻止；起源于某事物；逆行

prevent from head off

考纲分布

近6年出现 21 次

重要程度

100%
n 茎; 主干

考纲释义

n. 茎; 主干
英文释义：
the main body or stalk of a plant or shrub
真题例句：
- Tthe stems fail to grow away from the earth's gravity.
  茎在地心引力的作用下无法生长。
  [2020年福建省卷阅读理解]
- He had planted Dr. Williams's quick-growing seedlings in it, but none of the stems were showing.
  他把威廉姆斯博士的快速生长的幼苗种在里面，但没有一个茎干露出来。
  [2020年广州市阅读理解]
- The stems weren't growing upward and the roots weren't growing downward.
  茎没有向上生长，根也没有向下生长。
  [2020年广州市阅读理解]

考纲分布

近12年出现 7 次

重要程度

100%
n/v 茎; 主干; 去茎叶

考纲释义

n/v. 茎; 主干; 去茎叶
英文释义：
the main body or stalk of a plant or shrub
真题例句：
- I am Peter Hodes, a volunteer stem cell courier.
  我是Peter Hodes，我是一名干细胞快递志愿者。
  [2016年全国卷阅读理解]

真题例句

I am Peter Hodes, a volunteer stem cell courier.
2016年高考英语全国卷1 阅读理解阅读C 原文
I picked up the stem cells in providence, rhode island, and was meant to fly to Washington then back to London.
2016年高考英语全国卷1 阅读理解阅读C 原文

考纲分布

近12年出现 12 次

重要程度

75%
n/v 茎; 主干; 去茎叶
25%
v (问题/怒气)起源于

考纲释义

n/v. 茎; 主干; 去茎叶

英文释义：
the main body or stalk of a plant or shrub
v. (问题/怒气)起源于
英文释义：
originate in; or be caused by
真题例句：
- The innovative ideas stemming from curiosity.
  源于好奇心的创新想法。
  [2021年 CET4 阅读理解C]

真题例句

The humanities and STEM subjects should be given equal importance.
出自-2014年6月阅读原文
She noticed there was a real void in quality STEM education at all levels of the public educational system.
2017年12月四级真题（第二套）阅读 Section A
Studies show they're also perceived as more competent than women in STEM Science, Technology, Engineering, and Mathematics fields.
2017年12月四级真题（第二套）阅读 Section C
We all know there exists a great void in the public educational system when it comes to exposure to STEM Science, Technology, Engineering and Mathematics courses.
2017年12月四级真题（第二套）阅读 Section A

考纲分布

近12年出现 13 次

重要程度

54%
n/v 茎; 主干; 去茎叶
46%
v (问题/怒气)起源于

考纲释义

n/v. 茎; 主干; 去茎叶

英文释义：
the main body or stalk of a plant or shrub
v. (问题/怒气)起源于
英文释义：
originate in, or be caused by
真题例句：
- The solution to great team performance stems from a willingness to recruit others who could direct their passion towards the third phase of entrepreneurialism.
  优秀团队绩效的解决方案。，源于愿意招募那些能够将他们的激情引向创业第三阶段的人。
  [2021年 CET6 听力]
- This kind of thinking stems from our misclassification of drawing as an art form.
  这种想法源于我们将绘画错误地归类为一种艺术形式。
  [2021年 CET6 阅读理解]

真题例句

According to the survey, that lack of enthusiasm could stem from concerns about privacy and security.
出自-2016年12月阅读原文
This inconsistency largely stems from a feeling of powerlessness.
出自-2015年12月阅读原文
Recently, the UK National Stem Cell Network warned the UK could lose its place among the world leaders in stem cell research unless adequate funding and legislation could be assured.
出自-2011年12月阅读原文
In the America of our own time, the great educational challenge has become an effort to strengthen the teaching of what is now known as the STEM disciplines (science, technology, engineering, and math).
出自-2010年12月阅读原文
The STEM subjects are too challenging for students to learn
出自-2010年12月阅读原文
America is lagging behind in the STEM disciplines.
出自-2010年12月阅读原文
It is also critical for socially charged neuroscience issues such as the genetic basis for a particular behavior, the therapeutic potential of stem cell therapy for neurodegenerative diseases, or the use of animal models, areas where the public understand
2018年12月六级真题（第三套）阅读 Section C

考纲分布

近18年出现 4 次

重要程度

75%
v 起源于
25%
v 阻止; 遏制
0%
n/v 茎; 主干; 去茎叶

考纲释义

v. 起源于
英文释义：
originate in, or be caused by
真题例句：
- Some growth stems from a commitment by governments and farsighted businesses to fund cleaner energy sources.
  一些增长源于政府和有远见的企业为清洁能源提供资金的承诺。
  [2018年英语二阅读理解A]
v. 阻止; 遏制
真题例句：
- Stemming climate change, for example, is as much about changing consumption patterns and promoting tax acceptance as it is about developing clean energy.
  例如，遏制气候变化不仅在于发展清洁能源，也在于改变消费模式和促进人们接受纳税。
  [2013年英语一阅读理解B]
n/v. 茎; 主干; 去茎叶
英文释义：
the main body or stalk of a plant or shrub
真题例句：
- Though plants lack brains, the firing of electrical signals in their stems and leaves nonetheless triggered responses.
  虽然植物没有大脑，但它们的茎和叶发出的电信号却触发了反应。
  [2022年英语一完型填空]

真题例句

The researchers’ argument stems from a simple observation about social influence,with the exception of a few celebrities like Oprah Winfrey-whose outsize presence is primarily a function of media,not interpersonal,influence-even the most influential members of a population simply don’t interact with that many others.
出自-2010年考研阅读原文
Stemming climate change, for example, is as much about changing consumption patterns and promoting tax acceptance as it is about developing clean energy.
出自-2013年考研阅读原文