Professionalism has turned the acquisition of a doctoral degree into a prerequisite for a successful academic career: as late as 1969 a third of American professors did not possess one.

专业主义已经把获得博士学位变成了学术生涯成功的先决条件：直到1969年，三分之一的美国教授没有博士学位。

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Good self-esteem is a prerequisite for a happy life.

良好的自尊心是幸福生活的先决条件。

《柯林斯英汉双解大词典》

A degree is an essential prerequisite for employment at this level.

学位是做这级工作必备的先决条件。

《牛津词典》

That accord mandated by the U.S.Congress is a necessary prerequisite for American aerospace firms to bid on a pending Indian purchase of 126 multi-role fighter jets, potentially the largest-ever arms sale.

VOA: standard.2009.07.20

Purity, which is the absence of impurity, is a prerequisite for access to the holy or for holy status.

纯洁，不纯的反义词，是接近神圣或达到神圣状态的先决条件。

耶鲁公开课 - 旧约导论课程节选

In the fast-moving world of Web tech, being nimble is almost a prerequisite for survival.

CNN: Doug Gross,

For one thing, a penchant for sensationalism is almost a prerequisite for working in the media.

FORBES: Mosquitoes Ignore Global Warming Predictions

When you think about it, long-distance shooting isn't a prerequisite for being a great team.

WSJ: Myths That Can Murder Your Bracket