Mesonephridium
中胚肾
🗣️ 情景例句
Rotten weather, isn't it?
天气糟透了， 不是吗？
That is a serious matter.
那是件严重的事。
A fine rain began to fall on our heads and the temperature had dropped.
一阵小雨落到我们头上，气温开始下降了。