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。
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。
Shall we sway backward and forward, Mary, as if we were dervishes?
玛丽，我们要不要前后晃来晃去，就好像我们是托钵僧似的？
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。
On the first day of school, Socrates told his students, "Today, we'll only learn one thing. That is to swing your arm forward and backward."
在开学的第一天，苏格拉底告诉他的学生：“今天，我们只学一件事情。那就是前后摆动你的手臂。”
All chunks can be traversed starting from any known chunk in either a forward or backward direction.
所有的块都可以从任意已知块开始以向前或向后的方向被遍历。
However, in some cases, you will need to read cursors both forward and backward, in which case you should use scrollable cursor.
但某些情况下，您需要游标既能向前又能向后，此时需要使用可滚动游标。
For example, in the case where XML is used as a standard for data exchange, the application must provide backward or forward compatibility to older or newer versions of the standard.
例如，如果将XML用作数据交换标准，应用程序必须提供向前和向后兼容性，以支持较新或较旧的版本标准。
Each phase informs the others, both forward and backward.
每个阶段都向其他阶段提供信息(既可以向前，也可以向后)。
During the tests, participants were told to step four paces to the left, right, backward or forward.
在测试过程中，受试者还被要求向前、或向后、或向左、或向右走4步。
The ext4 file system is designed as a backward - and forward-compliant replacement for ext3fs but with many new advanced features (some of which break the compatibility).
Ext4文件系统被设计为具有向前和向后兼容性，但它具有许多新的高级特性(其中的一些特性破坏了兼容性)。
Browse diagrams keep a history of the views it displays so that you can navigate forward and backward from each view.
浏览图可以保持它所显示视图的历史记录，因此您可以从任何一个视图向前或者向后导航。
The editing functionality means that you can go forward and backward through the command line currently displayed to make changes and correct typos.
编辑功能意味着您可以在当前显示的命令行中向前和向后移动，以做出更改或纠正输入错误。
In that sense, Internet use is like a periscope: When users age 50-plus put theirs up, researchers have found, they're looking both backward and forward, toward the past and the future.
在这个意义上，互联网的使用像潜望镜：当使用者年龄50余岁时，研究人员已经发现，他们也在向后和向前的寻找，面向过去和未来。
By passing positive and negative increments, we will move forward and backward in the stack.
通过传递正或负的增量就可以在堆栈中向前或向后移动。
As such, consider making the frames play backward or forward in time depending on which button was clicked.
因此，帧在时间上是反向播放还是正向播放，取决于按下了哪一个鼠标按键。
"It gives you a point to work forward or backward from," Thompson explains.
汤普森解释道，“问清楚了，也好给自己一个时间定位，是向前还是向后。”
The backward and forward buttons on your browser's toolbar direct the browser from page to page.
浏览器工具栏中的后退和前进按钮指引着浏览器从一个页面移动到另一个页面。
Our goal is to create a set of functional history buttons: backward, forward, and reload, which are shown in Figure 1.
我们的目标是创建一组可用的历史记录按钮：后退、前进和刷新，如图1所示。
These enable your applications to update individual column values, or to scroll through result sets backward or forward.
这些方法使您的应用程序可以更新单个的列值，或者前后滚动结果集。
I stepped backward, and she stepped forward.
我后退了一步，她跟上来一步。
Users can move forward or backward in time to see where the hurricane has been—and where it’s headed.
用户可以按时间顺序前后推移，以查看飓风曾经到过哪里，将要到哪里去。
If we click backward through the stack, the forward button lights up.
如果在堆栈中回退，前进按钮就变亮了。
Subsequent invocations move the iterator backward or forward by the required distance.
后续的调用会将迭代器前后移动指定的距离。
SMB uses retro and modern game-design elements with a gleeful gloss of gore and absurdity, producing a game that simultaneously looks backward and forward at the same time.
“超级肉球小子”用上兼具复古与现代的游戏设计元素，加上欢快表象下的血腥和荒诞，产生出一个同时既有回顾性然而又有前瞻性的游戏。
Naturally, the user can move forward and backward, and can even return to a favorite one by bookmarking it.
自然，用户可以来回切换，甚至能通过书签功能返回喜欢的图片。
When clicking the backward and forward buttons for the application, we won't be adding new events to the stack but we will be moving the pointer within the stack.
单击应用程序的后退和前进按钮时，不会在堆栈中添加新的事件，而是移动堆栈的指针。
凡事向前看，别向后看。
It tugs at your hand, moving forward, backward, left and right to offer cues on direction and keep drivers from being distracted.
它拖船在你的手，前进，后退，左，右方向上提供线索，防止司机分心。
It tugs at your hand, moving forward, backward, left and right to offer cues on direction and keep drivers from being distracted.
它拖船在你的手，前进，后退，左，右方向上提供线索，防止司机分心。
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