With certain men, like Nathan, this tactic backfires.

对于某些男人，比如内森，这种策略适得其反。

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The guidelines, announced last year, suggest aspirin for certain men 45 to 79 years old with elevated heart-disease risk because of factors like cholesterol levels and smoking.

这份去年出炉的指南建议，对某些45至79岁、心脏病风险因胆固醇水平或吸烟而升高的男性来说，应该服用阿司匹林。

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A humpback whale, which was freed from almost certain death by three men off the coast of California, repaid the favour to its rescuers with a breathtaking display of breaches and dives.

有三个人在加利福尼亚海岸线附近解救了一头被困的座头鲸。这头鲸鱼上演了一场令人惊艳的水上跳跃表演，来答谢自己的恩人。

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They were conservative men. They represented workers with certain skills, such as wood workers or metal workers.

VOA: special.2011.03.31

Romano made a brief return to the small screen with Men of a Certain Age.

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We hold these truths to be self-evident, that all men are created equal, endowed with certain inalienable rights: life and liberty and the pursuit of happiness.

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Within that constituency, interviewers were then told to find people with a given set of characteristics--ie, a certain proportion of men and women, of blue-collar and white-collar workers.

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