The Russian biologist G. F. Gause performed numerous tow-species experiments in the laboratory, in which one of the species became extinct when only a single kind of resource was available.

俄罗斯生物学家 G. F. Gause 在试验室进行了大量的两个物种的实验，试验中，当只有单一的资源时，其中一个物种将会灭绝。

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This work adds to the idea of a general fitness factor, f, that is similar in concept to g—and of which g is one manifestation.

这次的研究让一个大体的健康因素f（与g相类似的概念）的想法更加成熟——而且g只是对f的一种表现。

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The star of these domains is one called the F-BAR domain, one of a handful of similarly termed “BAR domains” that have recently become a hotbed of research.

在这些区域中，最重要的是F-BAR区域。 与最近研究界的热点，术语“BAR区域”有点类似。

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A new report by the I.M.F.estimates that the world economy will shrink by one and three-tenths percent this year.

VOA: special.2009.04.24

There is a striking parallel here in that the group one elements have a tendency to want to give up electrons, F Cl Br whereas the fluorine, chlorine, bromine, have a tendency to attract electrons.

这儿有高度的相似性,每个组都有,失去电子的趋势的，相反的，则是有得电子的趋势。

麻省理工公开课 - 固态化学导论课程节选

printf Well, notice I'm calling print F with percent C, and then I'm printing out each of these letters one at a time.

好的，请注意我用%c来调用，然后我打印出一个一个打印出这些字符。

哈佛公开课 - 计算机科学课程节选

After the first round of LTRO Soros said the deal would only last a short time, f rom one day to three months.

FORBES: Soros: Euro Crisis Is Lethal, A Break Up Is Possible

The engine had been running at high temperatures for four times longer than a normal F-35 flight, causing a separation of the "grain boundary" on one blade, Mr Bates explained.

BBC: Grounded US F-35 fighter jet fleet to resume flights

Such a moment was the routine speech John F Kennedy planned to deliver one day in Dallas, Texas, at the Trade Mart.

BBC: The speeches written but never given