If she doesn't answer my calls, I make a rule of calling no more than twice a day every other day.

假如她不接你电话，我保持的原则是：每天打电话不超过两遍。

youdao

A good rule of thumb is that a broker must generate sales of ten times his salary if his employer is to make a profit.

一个很好的经验法则是，雇主要获取利润的话，其中间人必须创造10倍于自己薪水的销售额。

《柯林斯英汉双解大词典》

We make it a rule that each of us cleans the bedroom one day a week.

我们每个人每周打扫一天卧室，这是我们的规定。

youdao

Tripoli, Libya (CNN) -- Ahead of a landmark vote in Libya, an international monitor warned that Moammar Gadhafi's successors risk repeating the ousted dictator's mistakes unless electoral winners make rule of law a top priority.

CNN: Rights group: Rein in Libyan militias

The No. 1 rule of thumb: Never make a big upfront payment to a debt consolidator.

WSJ: Retirement Is No Holiday From Debt

Like all Premiership clubs, Pompey have now been sent a written explanation of the rule from the Premier League and have a week to make comments before any further action is considered.

BBC: SPORT | Football | My Club | Portsmouth | Portsmouth defend Fernandes loan