Rattlesnakes occur in the warmer, drier parts of North America.

响尾蛇出现在北美温暖干燥的地区。

In order to collect the venom, he has to find rattlesnakes in the western part of the United States.

为了收集蛇毒，他必须在美国西部找到响尾蛇。

The guide told us to look sharp because there are rattlesnakes around.

向导要我们特别留神， 因为附近有响尾蛇。

But the rattlesnakes are hungry.

但是，这些响尾蛇饿了。

Rattlesnakes belong to the viper family.

响尾蛇属于蛇科。

Rattlesnakes are poisonous American snakes.

响尾蛇是美洲的毒蛇。

Avoid it as you would avoid rattlesnakes and earthquakes.

避免辩论，就像避开毒蛇和地震。

Vipers (adders) and rattlesnakes manufacture the blood poison.

蝰蛇(蝮蛇)和响尾蛇产生血液毒素。

Roelke waded through swamps and dodged rattlesnakes to follow panthers.

为了跟随研究美洲豹，Roelke必须涉水通过沼泽和躲避响尾蛇。

My wife said, "We have copperheads around here too." A few rattlesnakes.

妻子说：“我们这儿还有美洲蝮蛇呢，还有几条响尾蛇。”

Rattlesnakes add a segment to their iconic rattles each time they molt.

每次蜕皮之后，响尾蛇标志性的环节尾都会增加一节。

Its builders would be banned from harming burrowing owls or rattlesnakes.

输电线路建造者还被要要求不能伤到穴鹗或者响尾蛇。

Among the attractions: a snake pit with several hundred western diamondback rattlesnakes.

其中景点有：拥有几百条西部菱斑响尾蛇的蛇窖。

Vipers (adders) and rattlesnakes manufacture the blood poison, which is known as hemolytic.

蝰蛇(蝮蛇)和响尾蛇产生血液毒素，称为溶血性毒液。

Vipers (adders) and rattlesnakes manufacture the blood poison, which is known as haemolytic.

蝰蛇（蝮蛇）和响尾蛇产生血液毒素，称为溶血性毒液。

Vipers (adders) and rattlesnakes manufacture the blood poison, which is known as haemolytic.

蝰蛇(小蝰蛇)和响尾蛇产生血液毒素，称为溶血性毒液。

Vipers ( adders ) and rattlesnakes manufacture the blood poison, which is known as haemolytic .

蝰蛇（ 小蝰蛇） 和响尾蛇产生血液毒素， 称为溶血性毒液。

Ok, some snakes do use the 'hollow fang trick' to take care of their prey. Rattlesnakes, for example.

有些蛇确实利用它们的中空毒牙毒液来压制猎物，比如说响尾蛇。

It is handy for killing rattlesnakes, which lurk in the long grass that has all but swallowed the town.

这把锄头可以很方便的杀死那些潜伏在几乎掩盖了整个城镇的长草里的眼镜蛇。

Okay, some snakes do use the "hollow fang trick" to take care of their prey. Rattlesnakes, for example.

没错，有些蛇确实是用它的中空毒牙来对付猎物的，比如响尾蛇。

Okay, some snakes do use the "hollow fang trick" to take care of their prey. Rattlesnakes, for example.

好吧，一些蛇确实是用这种“空心毒牙的把戏”来“关照”它们的猎物，比如说响尾蛇。

During the winter, the rattlesnakes seek retreats deep in the crevices, away from the dangerously low outside temperatures.

在冬天期间，响尾蛇找寻深入在裂缝中撤退，远离危险低外面的温度。

A similar situation has evolved among California ground squirrels with respect to the venom of northern Pacific rattlesnakes.

相似的演变同样发生在加利福尼亚本地松树和北太平洋响尾蛇之间。

Rattlesnakes, boas and pythons sense their prey's heat directly with "wasabi receptors" in their snouts, biologists reported.

生物学家报道，响尾蛇、王蛇和蟒蛇直接靠鼻部的“wasabi感受器”探测有体温的猎物。

These observations suggest that in some areas where the rattlesnakes are abundant, local squirrel populations have evolved a degree of resistance.

这些观察说明，在响尾蛇分布广泛的地区，当地松鼠会进化出一定程度的抗性。

That's because pit vipers, like rattlesnakes, and the group of snakes including pythons or boas can literally see the world in two different ways.

这是因为响尾蛇科毒蛇(响尾蛇)包括蟒蛇在内的一类蛇，可以用两种方式看世界。

Animals representing mythical powers and military might surrounded him-pumas, a Wolf, eagles, a falcon, an owl, and rattlesnakes-some buried alive in cages.

一些动物作为神和军事的力量的象征置放在他的周围——美洲狮、狼、鹰、隼、猫头鹰、响尾蛇——装在笼子里一起活埋。

By culturing cells taken from rattlesnakes, boas and pythons, and attaching electrodes, the team measured which cells respond to heat to produce this ability.

通过培养响尾蛇、王蛇和蟒蛇身上取下的细胞，并连接电极，研究小组测量出哪种细胞产生对热量作出反应的能力。