The lead editorial searched and questioned for an explanation for the first ever occurrence on the professional racquetball circuit.

牵头社论调查和询问，为了解释这个之前从未发生在职业壁球巡回赛上事情。

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Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

探索宇宙！每日展出一幅不同的有关迷人宇宙的图片，图片附有专业天文学家的简短说明。

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Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

每一天，都会有一张关于我们迷人的宇宙的照片被拍摄，并附有一位天文学家的解说。

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One is an explanation of science, medicine and professional morality.

VOA: special.2010.07.21

For a slightly more in-depth explanation of professional tasting, consultant editor Michael Jackson, an expert modest enough to recognize that his word on the subject was far from Gospel, shared his approach in Whisky Magazine.

BBC: A guide to the lingo and history of whiskey

One possible explanation is that professional investors are selling stocks to goad the Fed into rate cuts, since Bernanke specifically identified weakness in the financial markets -- assuming he meant equities more than commodities -- as a threat to economic growth.

FORBES: Inflation Anyone?

At least Animals offers some plausible explanation as to how real political families operate, and the personal and professional dynamics that explain the seemingly impossible behavior and decisions.

FORBES: If Hillary Clinton Divorced: Why USA Should Renew 'Political Animals'