Serosurvey
[医]血清学调查
🗣️ 情景例句
I have always worn a clip-on bow tie.
我都是用夹上去的领结。
A joke never gains an enemy but often loses a friend.
开玩笑总不能化敌为友，反而有时会失去朋友。
You look great today.
你今天看上去很棒。