拜登政府发布航空新规

1.ban 禁止，取缔

Chemical weapons are banned internationally.

国际上禁止使用化学武器。

2.recreation 娱乐；消遣

His only form of recreation is playing football.

他唯一的娱乐就是踢足球。

3.variant 变体；转化

The quagga was a strikingly beautiful variant of the zebra.

白氏斑马是一种极其美丽的斑马变种。

4.enforce 实施，执行

It's the job of the police to enforce the law.

警察的工作就是执法。