Ulcus penetrans
[医] 穿透性溃疡
🧩 词语组成解析
溃疡
🗣️ 情景例句
Dreadful weather, don't you think?
天气可真差劲，你说呢？
The more noble the more humble.
越高贵，越应谦逊。
But I couldn't answer the rest.They were too difficult for me.
但我回答不出其作的题。那些题对我来说太难了。