The newer company linked with several older ones for self protection.

新成立的公司为了自我保护而与几家老公司联合。

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This is most important and relevant to all areas. Since contagious diseases have different routes of infection, personal hygiene is the key for self protection.

这是最重要的一条，适用于每个区域。由于传染病的途径各不相同，那么保持良好的个人卫生就是保护自己的关键。

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The school has taught self-protection for four years.

这所学校教自我保护课已经有四年了。

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Experts also say that simply having a gun for self-protection does not guarantee safety.

CNN: STORY HIGHLIGHTS

But it turns out they may be brother and sister: in wartime, her mother had taken in (and taken up with) his father, a Jewish refugee and musician, while for self-protection conducting an affair with a Nazi.

ECONOMIST: Novels from the Netherlands

In November, less than three weeks before the Newtown shootings, the 2nd U.S. Circuit Court of Appeals in New York upheld a state law that requires those who want to carry handguns to show a special need for self-protection.

WSJ: High court weighs taking up new case on gun rights