Neither can be retrieved. Life is not a race, but a journey to be savored esch step of the way.

生活不是赛跑，而是每一步都应该细细品味的一次旅行。

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At this point esch chromosome consist of a pair of chromatids and the two associated chromosomes are termed a tetrad.

此时每条染色体由一对染色单体构成，这两条联合的染色体称为四分体。

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At present, there is no authoritative method for evaluating the functions of these materials, and esch company USES its own method.

目前，对这些功能材料的评定都是按各公司自行研究的方法进行，还没有一个官方的标准。

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Associated Press writers Chris Carola and Mary Esch in Albany and Tom McElroy in New York contributed to this report.

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Associated Press writers Mary Esch in Albany, N.

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