Urachus
脐尿管
🗣️ 情景例句
She hasn't been employed for six months now.
她已经失业半年了。
We never know the worth (or value) of water till the well is dry.
井枯方知水可贵。
Perhaps it will solve my problem, but I just haven't had time to read it!
也许这本书能解决我的问题，但我一直还没时间去看这本书！