ule of thumb
n.
单凭经验的方法
n.（名词）
【复数】 rules of thumb
A useful principle having wide application but not intended to be strictly accurate or reliable in every situation.
经验法则：一种可用于许多情况的有用的原则,但并不是放诸四海皆准
It's a rule of thumb to open the door that way.
ule of thumb
n.
单凭经验的方法
n.（名词）
【复数】 rules of thumb
A useful principle having wide application but not intended to be strictly accurate or reliable in every situation.
经验法则：一种可用于许多情况的有用的原则,但并不是放诸四海皆准
It's a rule of thumb to open the door that way.