Appar
n. 仪表（机构、学术著作中的注解）
🗣️ 情景例句
I plan to leave the present job in order to be able to get into the advertising business.
我想离开目前的工作是为了进入广告业务以寻求发展。
A friend is never known till a man have need.
不到患难时，永远不能认识真正的朋友。
He should have known that the police would never allow this sort of thing.
他本该知道警察绝不会允许这类事情发生。