Some communities have agreed to share online—geneticists, for example, post DNA sequences at the GenBank repository ( ' , 库), and astronomers are accustomed to accessing images of galaxies and stars from, say, the Sloan Digital Sky Survey, a telescope that has observed some 500 million objects—but these remain the exception, not the rule.
出自-2017年6月阅读原文
Historically, scientists have objected to sharing for many reasons: it is a lot of work; until recently, good databases did not exist; grant funders were not pushing for sharing; it has been difficult to agree on standards for formatting data; and there is no agreed way to assign credit for data.
出自-2017年6月阅读原文
Many even think their parents are cool! Although more than a third have an object in their rooms they would like to keep secret from their parents, rarely is it anything more alarming than a diary or offcolor ( ' , 低俗的) book or CD.
出自-2016年6月阅读原文
But over the last couple of years, and in this one in particular, we are starting to see companies shift from what is the largest screen size, the smallest form factor or the shiniest object and more into what all of these devices do that is practical in a consumer's life.
出自-2016年12月阅读原文
So a heavy object, like a football player moving at a high speed, has a lot of momentum — that is, once be is moving, it is hard to change his state of motion.
出自-2015年12月阅读原文
Physical characteristics of moving objects help explain the dynamics of energy systems.
出自-2015年12月阅读原文
Not only moving objects and people but all systems have momentum.
出自-2015年12月阅读原文
Inertia is the resistance of objects to efforts to change their state of motion.
出自-2015年12月阅读原文
In physics, moving objects have two characteristics relevant to understanding the dynamics of energy systems: inertia and momentum.
出自-2015年12月阅读原文
If the CFL should be used for lighting a particular space, or an object within that space, the fixture must be designed to work with that lamp, and that fixture with the room.
出自-2015年12月阅读原文
Consider the incandescent ( ' , 白炽灯 ) bulb, an object currently hated by many environmentalists and energy-efficiency advocates.
出自-2015年12月阅读原文
After all, we don't speak only of objects or people as having momentum; we speak of entire systems having momentum.
出自-2015年12月阅读原文
Why does the author object to classifying parenting as a personal choice?
出自-2010年6月阅读原文
The size of the objects shown.
出自-2012年12月听力原文
Boys pay more attention to moving objects than girls
出自-2012年12月听力原文
Although more than a third have an object in their rooms they would like to keep secret from their parents, rarely is it anything more alarming than a diary or off-color 低俗的 book or CD.
2016年6月六级真题(第一套)阅读 Section B
Consider the incandescent (白炽灯) bulb, an object currently hated by many environmentalists and energy-efficiency advocates.
2015年12月六级真题(第一套)阅读 Section B
For example, when information is uploaded to a repository,a digital object identifier is assigned.
2017年12月六级真题(第二套)阅读 Section B
In one experiment, 145 undergraduates completed four unusual uses tasks, each requiring them to list as many uses as possible for everyday object.
2019年12月六级真题(第一套)听力 Section B
So a heavy object, like a football player moving at a high speed, has a lot of momentum — that is, once he is moving, it is hard to change his state of motion.
2015年12月六级真题(第一套)阅读 Section B
So how do people assign traits to an object?
2019年12月六级真题(第三套)阅读 Section A
The knowledge we have about the object constitutes the cognitive component of an attitude.
2016年6月六级真题(第一套)阅读 Section A