Hydroxyalkyl
羟烷基
🗣️ 情景例句
Sorry I'm late.
很抱歉我迟到了。
Why are you so much taller than I?
你为什么个子比我高那么多？
I suddenly felt very worried, but could not say anything.
我突然非常着急起来，但却什么也说不出来。