Simple ulcer
[医] 单纯溃疡
🧩 词语组成解析
ulcer
['ʌlsə]
n. <医>溃疡;腐烂物;道德败坏;
🗣️ 情景例句
Those are the rules and regulations, and we have to abide by them.
这些就是这儿的规矩， 大家都应该遵守。
You're so great!
你真行！
You work for the Overseas Engineering Company, don't you?
你在海外工程公司上班，是吗？