Rattlesnakes sense prey by the heat they give off and the squirrel is able to take advantage of this.響尾蛇透過體溫感應獵物，地松鼠可以利用這點。

give off散發(光、氣味等)

The sun gives off heat and light.

太陽散發光和熱。

Rotten eggs give off a bad smell.

臭蛋散發出難聞的氣味。

be able to會； 能

He was able to cast off such an uninteresting task.

他終于擺脫了這么一項乏味的工作。

You are better able to do it than I (am).

你比我更有能力做這件事。

take advantage of利用；占…的便宜

It never occurred to me to take advantage of him.

我決沒有想到過要占他的便宜。

Don't take advantage of the greenhorn.

不要占那新手的便宜吧。

She heats up her tail with warm blood.它以溫暖血液加熱尾巴

heat up加熱； 加劇

The game didn't heat up until the second half.

游戲玩到后半場才熱鬧起來。

You would better heat up the tomato soup .

你最好把蕃茄湯熱一下。