Polyhydroxylation
多羟基化反应
🗣️ 情景例句
Santa Clara? OK. That's about 20 miles away.
圣塔克莱拉？好的，大约是20英里远。
The police crept up from behind and took the gangster by surprise.
警察悄悄从背后绕过去，出其不意地将歹徒逮捕。
I wonder why!
我很想知道为什么。