Viburnitol
荚醇, L-栎醇, 环已五醇
🗣️ 情景例句
I've only been waiting for an hour.
我已经等了一个小时了。
Why are you here?
你怎么会在这里？
Everybody on board was worried and we were curious to find out what had happened.
飞机上的人都很着急，大家都急于想知道究竟出了什么事。