early 15c., "an act of impelling, a thrust, push," from Latin impulsus "a push against, pressure, shock," also "incitement, instigation, impulse," past participle of impellere (see impel). Meaning "stimulus in the mind arising from some state or feeling" first recorded 1640s.
中文解释
1、im- "into, in, on, upon" + puls- "drive, push" + -e.2、含义：drive on, drive into; 推进、推动、驱动、冲动、脉冲。
实用例句
1. All day she had fought off the impulse to telephone Harry.
她一整天都在克制自己想给哈里打电话的冲动。
来自柯林斯例句
2. Sean's a fast thinker, and he acts on impulse.
肖恩是个思维敏捷、行事随兴的人。
来自柯林斯例句
3. After lunch she decided on impulse to take a bath.
午饭后她突然兴起，决定洗个澡。
来自柯林斯例句
4. Many people act on impulse without counting the cost.
很多人不考虑后果就莽撞行事。
来自柯林斯例句
5. He finally gave way to an impulse and pulled her toward him.