Ulcus rstundum
[医] 圆形溃疡, 胃溃疡
🧩 词语组成解析
溃疡
🗣️ 情景例句
He is still unable to express himself in English.
他仍然不能用英语表达自己的意思。
Experience must be bought.
若要得经验，必须化代价。
No, it's quite near.
不，很近。