Colecalciferol
膽骨化醇
??? 情景例句
I'll be right back.
我馬上就回來。
He can't really mean to work against us, can he?
他不可能故意妨礙我們的，對嗎？
On the last day I made a big decision.
到了最后一天，我作出了一項重大決定。