Triphoridae
三口螺科
🗣️ 情景例句
We are four in all.
我们家共有四口人。
Everything has its seed.
无风不起浪。
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。