As a rule, our finance team closes the monthly accounts by the fifth business day.

按照慣例，我們財務團隊會在第五個工作天前完成月結。

The general rule in our office is to reply to client emails within one day.

我們辦公室的常規是一天內回覆客戶的電子郵件。

As a rule of thumb, travelers should arrive at the airport two hours before departure.

根據經驗法則，旅客應在起飛前兩小時抵達機場。