Welander's ulcer
[医] 魏兰德氏溃疡, 性病样溃疡
🧩 词语组成解析
ulcer
['ʌlsə]
n. <医>溃疡;腐烂物;道德败坏;
🗣️ 情景例句
What does John do?
John现在做什么事？
I'll think it over.
我仔细考虑一下。
No, thanks. Help yourselves to the cakes.
不必，谢谢。请随便吃些糕点吧。