Vaccin
[医] 菌苗, 疫苗
🗣️ 情景例句
I can't make up my mind about it.
关于那件事，我还不能做决定。
If the hen does not prate,she will not lay.
不叨叨的母鸡不下蛋。
Sending a fax is more expensive than posting a letter, but much quicker.
发传真比寄信要贵些，但是要快得多。