| 短语 | rule of thumb |
| 释义 | rule of thumb a rough figure or method of calculation, based on practical experience〔根据实际经验的〕粗略的数字（计算方法）:•As a general rule of thumb, children this age should not spend more than one hour on homework.照理说，这个年龄的儿童家庭作业不应超过一个小时。 rule of thumb a broadly accurate guide or principle, based on experience or practice rather than theory 经验法则, 凭经验（或实践）得来的法则。 rule of thumb单凭经验的办事方法;从经验得来的办法：That shopkeeper knows nothing about management and administration，he runs his shop only by rules of thumb.那位商店主人对经营管理一点也不懂，他仅凭从经验上得来的办法经营他的商店。 |
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