Simple ulcer
[医] 单纯溃疡
🧩 词语组成解析
ulcer
['ʌlsə]
n. <医>溃疡;腐烂物;道德败坏;
🗣️ 情景例句
We have several package tours you may choose, from ten days to three weeks in Europe.
我们有几套欧洲旅游计划选择，时间从10天到3个星期。
We've got to get a telepnone stand for the hallway.
我们必须有一部电话放在走廊。
'I don't think the windows need cleaning at this time of the night.
“我看不必在夜里这个时候擦窗子吧。