This work is a foundation of the study of forward-backward equations.
这是研究正倒向随机微分方程的基础。
The forward-backward sweep method is adopted in power flow calculation.
潮流计算采用配电网广泛使用的前推回代法。
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)。
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。
I stepped backward, and she stepped forward.
我后退了一步，她跟上来一步。
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。
For fish to move forward, they have to push water backward.
鱼要想往前游，它们必须往后推水。
凡事向前看，别向后看。
After several goings backward and forward she was forced to bring him the key.
几番磨蹭之后她不得不拿给他那把钥匙。
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。
Sometimes the best way to go forward is to look backward.
有的时候回顾是最好的前瞻。
The upper thighs can move forward, backward, and outwards.
在大腿能够迈步向前，向后和向外。
I keep across those procrastinator and slow, and make me forward into their backward.
我不断越过那些因循者与迟缓者，而使我的前进变成他们的落后。
We must go forward, not backward.
我们必须向前进，而不是向后退。
She is forward in English but backward in math.
她的英语有进步，但数学落后。
What time is the same spelling backward and forward?
什么时候是相同的拼写向后和向前的？
The pilot can tilt the helicopter forward, backward, or to either side.
飞行员能使直升机向前倾斜，向后倾斜，或者向两侧倾斜。
This will make the car lurch forward or backward which could be dangerous.
这种情况是非常危险的，将会使汽车前进或后退。
Power control consists of forward link (downlink) power control and backward link (uplink) power control.
功率控制分前向链路（下行链路）、反向链路（上行链路）功率控制。
Sometimes you need to take a step backward to move your career forward.
回答：有时候，退后一步才能有助于职业生涯更好地进步。
The farther backward you can look the farther forward you will see.
你回首看得越远，你向前也会看得越远。（丘吉尔）
Youth looks forward and age backward.
译〕青年人向前看，老年人向后看。
Youth looks forward and age backward.
青年人向前看，老年人回头看。
Buttons that you can click to move forward or backward through your presentation.
按钮，您可以点击向前或向后通过您的介绍。
Is the world we live in going forward or backward?
我们生活的这个世界是在进步还是在退步？
They can even have one eye looking forward and one eye looking backward !
它们甚至可以一只眼睛看前面，另一只眼睛朝后看。
They can even have one eye looking forward and one eye looking backward !
它们甚至可以一只眼睛看前面，另一只眼睛朝后看。
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