whack

柯林斯词典

1. V-T If you whack someone or something, you hit them hard. 重击[非正式]
You really have to whack the ball. 你真得重击这个球。
2. N-COUNT/SOUND Whack is also a noun. 重击
He gave the donkey a whack across the back with his stick. 他用棍子在驴背上狠狠打了一下。
3. PHRASE If something is out of whack, it is not working properly, often because its natural balance has been upset. (常因天然的平衡被打乱而) 出问题[美国英语] [非正式] [PHR after v, oft v-link PHR]
The ecosystem will be thrown out of whack. 生态系统将出现问题。