Ulcus penetrans
[医] 穿透性溃疡
🧩 词语组成解析
溃疡
🗣️ 情景例句
My boss thinks I'm a machine.
我的老板把我当机器使唤。
How much?How many?
共多少？
Though he kept throwing up his arms in despair, he readily accepted the $5 I have him.
虽然他绝望地举起双手，但他毫不迟疑地收下了我付给他的5镑钱。