Perfrating ulcer
[医] 穿孔性溃疡, 穿通性溃疡
🧩 词语组成解析
ulcer
['ʌlsə]
n. <医>溃疡;腐烂物;道德败坏;
🗣️ 情景例句
No, by train.
不， 坐火车。
How often did I tell you to keep quiet?
我告诉你多少次要安静?
The village is on a river.
它靠近一条小河。