Sean's a fast thinker, and he acts on impulse.
肖恩是个思维敏捷、行事随兴的人。

Cecil's mixed with species of the impulse to cry.
丝丝的夹杂着种想哭的冲动。

On an impulse he kicked some sand into Ridge's foxhole.
一时性起，他就提起脚来将一些沙子踢进里奇的坑里。

The climate of England has been the world's most powerful colonizing impulse.
英国的天气引发出全世界力道最足的殖民冲动。

It is, of course, possible to control this impulse in the interests of morality, but it's very difficult to prevent the impulse from existing.
人当然可以以道德控制冲动, 但却很难摒除这种冲动。