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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Here,he uses a set of buttons attached to a computer to make the silent robot move forward, backward or around in circles.

VOA: special.2009.12.17

So, you reinforce the pig for walking forward and you punish the pig for walking backward.

那你就对这头猪向前走的行为给予强化,如果它向后退，你就惩罚它。

耶鲁公开课 - 心理学导论课程节选

And now since it's reversible, we can run it forward or backward.

因为它是可逆的，所以可以正方向运行。

麻省理工公开课 - 热力学与动力学课程节选

"At home, my dad used to chant Telegu poems from forward to backward and backward to forward, that kind of thing, " Srinivas Mahankali said.

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Tapping once on a book opens it for viewing and you swipe forward or backward to turn pages.

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In addition to moving the camera left and right, the thumbstick is in charge of making in-game characters walk forward and backward.

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