He held his breath as a rat scuttled past.

见一只老鼠跑过，他屏住了呼吸。

《牛津词典》

The Rat paid no heed to his doleful self-reproaches.

水鼠没有理会他悲哀的自责。

youdao

The Rat shook his head with a smile.

水鼠兰特笑着摇了摇头。

youdao

There are certain-- you can take a rat and put an electrode in his brain.

有某种…,可以在老鼠脑子里装一个电极。

耶鲁公开课 - 死亡课程节选

In Neurobiology last year, we were told of a rat who was tested a particular center in the brain where the rat was able to stimulate his brain and caused itself intense pleasure repeatedly.

上学年的生物神经学课提到个实验,老鼠的大脑有一特定区域,让老鼠自行刺激这一区域,从而不断获得强烈的快感。

耶鲁公开课 - 公正课程节选

Stockman waited all of three months to rat on his colleagues.

FORBES: Who's the Economic Fraud Now?

It was filed nearly a year before the Orange County Tax Rat coughed up his documents.

FORBES: Informer

Republicans focus on incentives: Double the cheddar, and the rat will navigate his turns more quickly.

FORBES: Morality First: The End of Behaviorism