All of this is a lot to remember. Juggling f-stops, shutter speeds, and ISO values in your head while trying to compose a shot can be tough, especially for beginners.

太多参数需要记住，尤其对于初学者来说，相反的f值，快门速度，以及IS O值，在准备拍摄一张照片的时候这些参数实在太过复杂。

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Aperture sizes are expressed in "f-stops."

光圈的大小用“f”来代表。

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The fermentation process stops when there is no F) longer any sugar to transform.

直到所有的糖全部转化完毕，发酵的过程才会停止。

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Sure, there are plenty of startups within a short hop of F stops in DUMBO and the Flat Iron districts, but there are even more in F-free Soho and Union Square.

FORBES: Sorry, New York Doesn't Have A "Silicon Subway Line"

The island can be reached from Manhattan on the F train, only three stops after Rockefeller Center, but according to a 2009 report on the island's infrastructure conducted by the department of urban affairs and planning at Hunter College, the subway was even then running at full capacity.

WSJ: Louis Kahn | Four Freedoms Park | Louis Kahn's Four Decades to Freedom | By Julie V. Iovine