slack hand

• 玩忽； 不小心

slack hand的用法和样例：

例句

1. She accidentally pinched her hand in the front door.
   她不小心在前门上夹了手。
2. A girl accidently set down an iron on her hand and she got a bad burn.
   有个女孩一时不小心，把熨斗放到了她手上，手烫成重伤。