Callous ulcer
[医] 胼胝性溃疡, 无痛性溃疡
🧩 词语组成解析
ulcer
['ʌlsə]
n. <医>溃疡;腐烂物;道德败坏;
🗣️ 情景例句
Even if you ask me a thousand times, my answer will still be no.
就算你问我一千遍，我还是会说“不”。
Hold fast when you have it.
紧握你手中之物。
Would you mind if I smoked in the office next door?
我在隔壁吸烟可以吗？