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
It's going to be a piece of cake.
这种事不费吹灰之力。
Yesterday it rained all day.
昨天整天下雨了。
Let's take a short break for lunch.
让我们休息一会儿，去吃午饭。