专家们认为，大约只有15%的幸福感来自于收入、财产和其他的经济因素，而90%则来自于态度、支配生活的能力和人际关系等。

Experts say only about 15 percent of happiness comes from income, assets and other financial factors. As much as 90 percent comes from elements such as attitude, life control and relationships.

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所有这此电磁波都受麦克斯韦大约于150年前创立的四个数学公式的支配。

All these electromagnetic waves are governed by four mathematical expressions established almost 150 years ago by James Clerk Maxwell.

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他们都只存大约30%的可支配收入。

They all save about 30 percent of disposable income.

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