Cscr
[医][=Central Society for Clinical Research]临床中心研究学会
🗣️ 情景例句
Thank you. Yes, actually Mary and I have been planning this for some time.
谢谢。其实玛丽和我已计划了很久。
He's concentrating on learning English.
他集中精力学英语。
I'm not sure how this works.
我不懂这是如何操作的。