Dicrocoelid
双腔吸虫
🗣️ 情景例句
That sounds a good idea. Thank you.
好主意！谢谢你。
How would I know?
我怎么知道？
The bridge is so long that the shape of the earth had to be taken into account by its designer.
由于桥身太长，设计者不得不考虑了地表的形状。