Ulcus exedens
[医] 侵蚀性溃疡
🧩 词语组成解析
溃疡
🗣️ 情景例句
You.
你。
Let difficulties occur but not the loss of courage.
纵使困难重重，也不丧失勇气。
You are never too old to learn.
活到老，学到老。