🧩 词语组成解析
[医] 二苯硫脲
vaccine
['væksi:n]
n. 疫苗，痘苗;
adj. 痘苗的，疫苗的;
🗣️ 情景例句
whom I think you've met once or twice before.
我想你以前见过他一两次面。
The lumberjack sweats as he cuts down a tree.
伐木工人边砍树边擦汗。
Really? Wonderful!
真的吗？好极了！