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。”
Forward and Backward Movements.
前进以及后退。
Roll shoulders forward and backward.
轧辊的肩膀前进，后退。
Practice moving forward and backward through your slides.
要练习前后移动幻灯片。
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)。
Forward and backward navigation through search results and marks.
通过搜索结果并标记来进行前向和后向导航。
This is because they move their ears forward and backward to catch sounds.
这是因为它们的耳朵可以前后移动来捕捉声音。
Operational matrices for forward and backward integrations have been derived.
导出了正向和逆向积分的运算矩阵。
Accompanied by brisk and lively music, she moves forward and backward with alacrity.
在轻快的音乐伴奏下，她前后走动，步态轻盈。
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。
Afterwards, I went toward the yard and looked upward, downward, inward, outward, forward and backward.
后来我走向院子，向上下内外前后看。
You will also write navigation to help the user mover forward and backward through the image list.
还要编写导航，帮助用户在图像列表中来回移动。
At the same time, two arms curving slightly, swinging forward and backward rhythmically like walking.
同时，双臂略弯曲，像走路一样有节奏地前后摆动。
For this reason, ext4 was designed to be both forward and backward (to an extent) compatible (see Figure 1).
为此，ext4被设计为在extent方面具有向后和向前兼容性(参见图1)。
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。
The sum of forward and backward delays of different packets is regarded as one packet's'round-trip delay'.
把不同分组在两个方向上经历的最小时延之和看成是同一个分组经历的“往返时延”。
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。
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。
The navigation bar contains controls to navigate forward and backward as well as the ability to enter a page to load directly.
导航条包含了可以向前向后或者直接定位页面的控件。
The design is a nod to freshwater knifefish, which can move forward and backward, and hover, by rippling an elongated ventral fin.
Gymnobot的设计灵感来自于一种名为宝刀鱼(knifefish)的淡水鱼，这种鱼利用腹部长长的鱼鳍，在水中可以进退自如，还可以作出水中盘旋等动作。
Hummingbirds are well known for their wing speed and ability to hover and fly forward and backward with more precision than a helicopter.
众所周知，蜂鸟的翅膀拍打速度极快，它即可以凌空悬停，也可以快速向前飞行和向后飞行，其飞行的精准度甚至超过了直升机。
As shown in the demo video (see Resources), these three-finger gestures are used to move forward and backward in the browsing history.
如演示视频所示(请参阅参考资料)，这些三指手势用于在浏览历史记录时向前和向后移动。
The optimization problem was formulated as a multiple-stage optimal control problem and solved by a forward and backward iteration loop.
整个最优化问题被描述成一个多阶段系统优化控制问题，通过一个向前和向后的迭代循环解决。
So again, for this slightly more complicated problem, the ratio of the forward and backward rates are related to the equilibrium constant.
又一次对于这个稍微复杂一点的问题，正向速率和逆向速率的比，和平衡常数相关。
You can use south. It detects changes to your models and creates migration files that allow you to sync your database forward and backward.
您可以使用南。它检测到更改您的模型并创建迁移文件，允许你同步数据库向前和向后。
Zend_Paginator also takes care of generating the page navigation links, which allow the user to move forward and backward through the result set.
Zend _ Paginator还负责生成页面导航链接，从而允许用户向前或向后浏览结果集。
Without the need of any auxiliary switches or complex passive resonant network, the converter can achieve ZVS in both forward and backward modes.
不需要任何辅助开关或无源谐振网络，变换器就可在双向变换工作中实现零电压开关。
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。
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。
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