rule of thumb
US /ruːl əv θʌm/
UK /ruːl əv θʌm/
1.
经验法则, 粗略的估计
a broadly accurate guide or principle, based on experience or practice rather than theory
:
•
As a rule of thumb, always save at least 10% of your income.
作为经验法则，至少要存下你收入的10%。
•
A good rule of thumb for cooking rice is two parts water to one part rice.
煮饭的一个好经验法则是两份水配一份米。