Copy the document (so as not to damage the original).

复制一个文档副本(以使原始文件不被损害)。

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In eggs, mitochondria have only one copy of this DNA, making them vulnerable to damage as women age.

卵细胞中线粒体的DNA只有一个副本，随着女性的年龄增长，他们极易受到伤害。

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In an article published today in the Los Angeles Times (a copy of which is attached), Gaffney encouraged stockholders in defense corporations like Lockheed to recognize the serious damage hostile takeovers of their companies would likely inflict, both on their own investment and on the national interest.

CENTERFORSECURITYPOLICY: Center Warns Against Corporate Raids On US Security