Riga's disease
[医] 里加氏病, 恶病质性口疮
🧩 词语组成解析
🗣️ 情景例句
Oh, Richard! That's wonderful, but--
噢， Richard ，那真是太好了， 可是……
Are you sure this is where we are to meet them?
你确定要在这个地方和他们碰头吗？
I'm afraid that I can't.
恐怕不行。