Siphonula
管胚
🗣️ 情景例句
Littering is a serious offense in some countries.
乱扔垃圾在某些国家是严重的违法。
I've been part of this project since its beginning.
从一开始我就参与这个计划。
They were not fighting men, and their harp was their passport.
他们不是作战人员，竖琴就是他们的通行证。