Leptothrix
[医] 纤毛菌属
🗣️ 情景例句
What are you working on?
你在干什么？
My cousin is a member of a stamp club, He seems stamp collecting.
我的表兄是一个集邮俱乐部成员，他似乎很喜欢集邮。
The machines will not operate properly.
那些机器不能正常运转。