Ulcus exedens
[医] 侵蚀性溃疡
🧩 词语组成解析
溃疡
🗣️ 情景例句
Thanks, Grandpa. Please sit down.
谢谢你， 爷爷。请坐。
Why are you so happy?
你为什么这样快乐？
Oh. It's very nice. How far have you been in it?
嗬，太漂亮了。你开它走了多远？