Antismallpox vaccine
[化] 抗天花血清
🧩 词语组成解析
vaccine
['væksi:n]
n. 疫苗，痘苗;
adj. 痘苗的，疫苗的;
🗣️ 情景例句
I have two days off a week.
我一星期休息两天。
I had a glass of water.
我喝了一杯水。
How old are you?
你多大了？