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》

A rule of thumb if you like. A way of making a decision.

拇指原则，一种做决定的方式。

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As a rule of thumb, if a virtual application pattern meets the needs of your application, then it offers the most value to your organization.

一条重要原则是：如果某个虚拟应用程序满足您的应用程序的需求，那么它就能向您的组织提供最大价值。

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That's actually a really good rule of thumb.

那实际上是一个好的经验法则。

哈佛公开课 - 计算机科学课程节选

Sy Harding , editor of Street Smart Report, cites that last Fed tightening cycle as an illustration of a rule of thumb he calls "Three Steps and a Stumble"--the third rate hike kills the bull.

FORBES: Despite Rate Hikes, Stocks Ready To Bounce

Often we accept people into our social networks by extension of trust, i.e. a friend of a friend, so a good rule of thumb might be to question how well you really know a person before accepting a new friend request.

FORBES: Be Careful Who You Know

Robert Hazlett, pharmaceuticals analyst at Robertson Stephens, says he uses a rule of thumb that a drug is worth four times continuing sales.

FORBES: Magazine Article