Corrosive ulcer
[医] 腐蚀性溃疡, 坏疽性口炎
🧩 词语组成解析
ulcer
['ʌlsə]
n. <医>溃疡;腐烂物;道德败坏;
🗣️ 情景例句
I have been learning English for three years now.
我学英语有3年了。
How's your uncle?
你的叔叔好吗？
Dad, this box is too heavy. We can't carry it.
爸爸，这个箱子太重了，我搬不动。