✅ 同义词
🗣️ 情景例句
Shall I tell him you called?
我告诉他你来过电话，好吗？
I'm done.
我不行了。
The cave might never have been discovered has not the entrance been spotted by the distinguished French pot-holer, Berger.
若不是法国著名洞穴探险家伯杰由于偶然的机会发现了这个洞口的话，这个洞也许不会为人所知。