他对在八点整进早餐一事非常认真。一定在八点整吃早餐，be particular about…对……讲究。

He is very particular about having his breakfast at exactly 8 o 'clock.

youdao

他对在八点整进早餐一事非常认真。一定在八点整吃早餐，be particular about…对……讲究。

He is very particular about having his breakfast at exactly 8 o 'clock.

youdao