Ulcers
n. 溃疡, 疡（ulcer的复数）
🗣️ 情景例句
Excuse me, but may I ask how old you are?
对不起， 我能问一下你多大了吗？
It's very nice of you to come and see me off.
您来给我送行，真是太客气了。
I want something to eat.
我想吃点东西。