505 rule of thumb

今天我们要学的词是rule of thumb。 Rule of thumb, 经过反复实践,得出的一般规律。一项最新研究指出,少吃能长寿。 "The rule of thumb is that by eating 15 % less starting at age 25 you could add 4.5 years to your life," 一般规律是,如果你从25岁开始,饭量减少15%,就能多活四年半。

如今油价飞涨,省油的高招之一是: "As a rule of thumb, shut off your engine if you expect to be sitting for more than 30 seconds," 一般来说,如果停车超过半分钟,就应该熄灭引擎。好,今天我们学习的词是rule of thumb...

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