Annull
v. 使成无效;取消
🗣️ 情景例句
The pollution in Beijing is alarming.
北京的污染给人们敲起了警钟。
When did you buy the car?
你什么时候买的车？
I meant to tell you yesterday, but you were not in your office.
我原想昨天告诉你的，但你没在办公室。