Dideoxy
双脱氧法
🗣️ 情景例句
My mother is terrific at any kind of sewing.
我母亲做任何针线活都棒极了。
I was sick yesterday,but I'm better today.
我昨天病了，但是我今天好一些了。
Would you like a drink ?
你们想喝点什么吗？