Being directed against elliptical gear drive a kind of non-zero modification method has been advanced.

针对椭圆齿轮传动提出了一种非零变位的方法。

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The first approach to consider is what we might think of as the "zero case" (or "null hypothesis" to borrow from science, or "first principles" from philosophy) of XML document modification.

第一种可以考虑的方法是对XML文档修改使用“零案例”(或者从科学上说，是“空假设”，从哲学上说，是“第一法则”)。

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They are fashioning a sort of homemade mortgage modification, one that brings their payments all the way down to zero. They use the money they save to get back on their feet or just get by.

他们之间流行一种自制的按揭支付模式，这样做能够让他们的支出降到零，省下的钱可以让他们东山再起，或者至少让他们的生活还过得去。

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