✅ 同义词
🗣️ 情景例句
I've known Martin for years.
我认识马丁好多年了。
I know the boy whose father is a dentist.
我知道那个男孩的父亲是牙医。
Mr. Smith knew Jack didn't look at the others because he was nervous.
史密斯先生知道杰克不敢看别人是因为紧张。