impulse signalling

例句：

1. 1. She felt anintense urge to run after him.
   她感到强烈的冲动想要追上他。
2. 2. Thedecision was made impulsively without much thought.
   这个决定是仓促决定的，没有深思熟虑。
3. 3. He had asudden impulse to leave the partyearly.
   他突然有冲动想早点离开聚会。