Sacs
n. （动植物组织中的）液囊( sac的名词复数 )
🗣️ 情景例句
There's nothing you can do about it.
你对此无能为力。
Go for wool and come home shorn.
求得反失。
Here and here. And I can only move my arm as much as this.
这儿和这儿。我只能这样摆动手臂。