Hydrindantin
[化] 還原茚三酮
??? 情景例句
but it's too early to know for sure.
但我現在還不能決定。
For me, studying in another country is very exciting.
對我來說，到國外留學是一件刺激而又有趣的事。
Yes, it is. You need to wear warmer clothes.
是啊，你應該穿得更暖和些。