Ulcus exedens
[医] 侵蚀性溃疡
🧩 词语组成解析
溃疡
🗣️ 情景例句
Sorry to keep after you, but could you tell me...
对不起，又打扰你了，你能告诉我…
It is my pleasure to introduce the keynote speaker for today.
我很荣幸地介绍今天的主讲人。
What's that?
那是什么日子？