Fdcd
[化] 荧光检测圆二色性
🗣️ 情景例句
Take care of yourself.
多保重。
I'm too nervous.
我太紧张。
Before he retired, Frank was the head of a very large business company, but as a boy he used to work in a small shop.
在退休前，弗兰克是一家非常大的商业公司的经理，但他小时候却在一家小铺里做工。