Biotoxin
生体毒素
🗣️ 情景例句
It's hard to do anything but listen in this family.
在这个家庭 除了听别人之外还能怎样。
There are spots in (or on) the sum.
人孰无过。
I am not sure such data does exist.
我不确定是否有这样的资料存在。