Protonephridium
n. [动]原肾管,原肾
🗣️ 情景例句
Donald passed away a couple of years ago.
Donald几年前去世了。
Pick up the receiver and deposit a coin in the slot.
拿起听筒和放一个硬币到投币口。
There were birds too, with the eyes carved out of the rock and painted white.
还有一些鸟的眼睛是用石头刻的，并被涂上白色。