Planorbidae
[医] 扁卷螺科
🗣️ 情景例句
This.
这个。
Sail while the wind blows; wind and tide wait for no man.
驶船要乘风，风潮不等人。
At the moment, they cover every inch of floor space and I actually have to walk on them to get in or out of the room.
这会儿，书把地板的每一点空隙都占据了，我实际上是踩着这些书进出房间的。