✅ 同义词
🔴 反义词
🗣️ 情景例句
It's time we hired a secretary to answer the phones.
我们早就该请一个秘书接听电话了。
I know the boy whose father is a dentist.
我知道那个男孩的父亲是牙医。
Even if a piped water supply is safe at its source,
既使管道供水系统在水源处是安全的，