Aphthous ulcer
[医] 口疮性溃疡
🧩 词语组成解析
[医] 口疮的
ulcer
['ʌlsə]
n. <医>溃疡;腐烂物;道德败坏;
🗣️ 情景例句
My doctor advised me to give up smoking without delay.
医生劝我立即戒烟。
Mary is in her freshman year.
玛丽大学一年级。
It's a pleasure working with you.
与您合作很愉快。