We are motivated by the original meaning and spirit of philanthropy: the practical expression of love and compassion toward humanity.

我们遵循慈善最本质的意义和精神：对人类爱和同情的实际表达。

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By very simple mathematical derivations, the practical expression of (Vzz), the expression of normal vertical gravity gradient, and the comment on the accuracy were given.

本文以极简单的数学推导，给出了正常重力垂直梯度的实用表达式，并对其精度作出了评价。

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Despite such exaggeration, Mr. Hewitt makes a powerful case that blogs are a decentralized discussion forum free from the practical limits that the mainstream media impose on individual expression.

WSJ: Caught in the Web