在此演示中，为布局指定Tabular，为方向指定Portrait。

For our this demonstration, specify Tabular for layout and Portrait for orientation.

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热量限制的研究为我们指明了方向。

Studies of caloric restriction are showing the way.

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觉醒和集中的过程为注意力提供了方向。

The processes of arousal and concentration give attention its direction.

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It's good to have a vector pointing in the radial direction of length one.

所以引入这么一个模长为 1,方向沿圆心向外辐射的矢量作用很大

耶鲁公开课 - 基础物理课程节选

So the minus vector is the same vector flipped over, pointing the opposite way.

因此负矢量即为同一矢量的翻转,指向相反的方向

耶鲁公开课 - 基础物理课程节选

The second law is going to define entropy, and is going to tell us about the direction of time, something that conceptually we, clearly, understand but is going to put a mathematical foundation on which way does time go.

第二定律定义了熵，它告诉我们,时间的流向，虽然我们清楚地,知道这个概念,但还是要为时间流动的方向,建立一个数学基础。

麻省理工公开课 - 热力学与动力学课程节选