The final step came when steam was introduced into the cylinder to drive the piston backward as well as forward, thereby increasing the speed of the engine and cutting its fuel consumption.

最后一步是将蒸汽引入气缸，使得活塞前后推动，从而提高了发动机的速度，降低了燃料消耗。

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During a game, while sliding into third base, my cleat caught and pulled my foot to the right and backward as my body fell forward.

一次比赛，在进第三垒时，我的防滑钉被卡住了，身体朝前栽倒，脚腕却扭向右后方。

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In pre-Classical Greece, for instance, people "corrected" official calendars by shifting dates forward or backward to reflect the change of season.

例如，在前古典时期的希腊，人们通过前后移动日期来“修正”官方日历，以反映季节的变化。

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The only way to show compensation still rising is to combine forward- and backward-looking measures of pay in any year, a misleading statistical technique.

ECONOMIST: A debate over how much American bosses are paid

It was messy, it was forward-looking and backward-looking at once.

FORBES: Willy DeVille

While the idea of moving forward and backward in-game with an analog stick on the side of a gun controller seemed unintuitive at first, its execution turned out to be practical.

ENGADGET: blogger-avatar