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
I've got to keep my nose to the grindstone to support my family.
我拼命工作养家。
But you just got here. Can't you stay a little longer?
不过你刚来呀。不能再呆一会了吗？
Yes, I have a small one.
我有一个小的。