You can do it with just money, but it’s often useful to re-calculate the hours of your life spent working for each item each month, as it is a healthy reminder of where your time goes.

它可以只是钱方面的预算，但是重新计算在每月日常生活中的每一件物品花费的时间，往往是有益的。

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Parents loves me dearly from childhood right away very much, hope that I become a useful people, they work changing the life having come to my comfort today be pleased with self working hard for.

父母从小就很疼爱我，希望我成为一个有用的人，他们用自己的辛苦劳动换来了我今天舒适惬意的生活。

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He thought he had another 20 years or so of useful life, and was working on the 21st Aubrey novel.

ECONOMIST: Patrick O��Brian

The bottom line is that the cylinders have now passed their useful shelf life as the ultimate reference for the kilogram and as a result, scientists around the world have been working on new ways to define the kilogram.

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