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》

My TDD rule of thumb is that tests should be moist but not drenched.

我的 TDD 经验法则是，测试应该是湿润的，但是不要湿透。

youdao

As a general rule of thumb, at every transition point, log it.

根据一般的经验，在每个过渡的地方，需要进行日志记录。

youdao

So really, the rule of thumb if you think back to Scratch is -- that any time you write a statement -- -- something that does something in one line of code -- you generally need the semicolon there.

实际上，根据经验，你们回忆一下在Scratch中,任何时候你们写一条语句-,处理一些操作的一行代码-,你们通常需要在那里加个分号。

哈佛公开课 - 计算机科学课程节选

Many finance folks are familiar with the rule-of-thumb that utilities tend to trade like bonds.

FORBES: The Housing Bubble Is Back

To mitigate the loss of this rule-of-thumb, Nargentino advises a tough conversation with yourself (and your family) about your risk tolerance.

FORBES: 1. Use 100-Minus-Your-Age To Find Bond Allocation

They were efforts, mostly pharmacological and rule-of-thumb, to provide relief from symptoms.

WSJ: DSM-5: A Manual Run Amok