Caseidin
n. [生化]酪蛋白免疫素
🗣️ 情景例句
that will bring parents and teachers together once a week
让家长们及教师每星期一次
If he doesn't play, who will?
如果他不，谁要去玩？
From all such fears camping releases him.
露营使人们免除了这些忧虑。