Ragg
[医][=rheumatoid agglutinator serum]类风湿凝集素血清
🗣️ 情景例句
Good-bye.
再见。
It's very nice of you to come and see me off.
您来给我送行，真是太客气了。
Nothing much. Only some school work. Why?
没什么事。只有一些作业。什么事？