Cder
[醫]Center of Drug Evaluation and Research
??? 情景例句
Dear Mr. Billet.
尊敬的比利先生。
Don't mention it. I hope you can come again soon.
不用謝，希望你不久能再來。
I can hear something! said Lucy.Does anybody live on this island?
“我聽到什么東西了！”露茜說，“島上有人居住嗎？”