Spirostanone
[化] 螺甾烷酮
🗣️ 情景例句
It hurts so much when a baby gets his first teeth.
小孩子长第一颗牙齿时好痛哟。
What part of the world do you come from?
你从世界的哪部分来的？
Did you enter the contest?
你参加比赛了吗？