Weatherproofness
风雨密性
🗣️ 情景例句
We urgently need to establish our own credit system.
我们期待建立我们自己的信用机制。
I know the boy whose father is an engineer.
我知道那个男孩的父亲是工程师。
Yes. Wash your hands with soap at the end of your experiment.
可以。在实验结束时要用肥皂洗手。