Butyrocopal
丁酸
🗣️ 情景例句
Lacks vitality.
缺乏活力。
Have you invited any boys?
你邀请男孩吗？
The girl asked to see a timetable, feeling sure that her father could not have made such a mistake.
姑娘要求看到时刻表，因为她相信父亲不能把这么大的事弄错。