一碰到

• at a touch

例句

1. 我从未见到过这样会睡的人。只要他的脑袋一碰到枕头，他就会死一样地躺在那儿，一动不动的，直到一觉睡醒。
   I never knew such a sound sleeper! Once his head touches the pillow, he just lies there as still as death till he's wakened.
2. 一碰到潮湿我的关节炎就要复发。
   Anything damp and my rheumatism comes back.