And you say, "This is the direction of gravity" which is as real for you as it can be.

你会说，重力方向是个方向的“，就像真的有这个方向上的重力一样。”

youdao

Think of this as being a plumb line to find... used to find the direction of gravity.

假设这是铅垂。，想想重力方向是怎样的。

youdao

I'm going to put you in various positions and then ask you what is the direction of gravity.

我会把你放置在不同的情境中，然后问你重力的方向。

youdao

For most of us, gravity acts this way, defines a vertical direction very naturally and the blackboard is oriented this way, so very natural to call that x and call that y and line up our axes.

对我们多数人来说,重力作用下,很自然地确定了竖直方向,而我们的黑板又是这个指向的,所以很自然地定出 x 轴和 y 轴,并标出我们的坐标系

耶鲁公开课 - 基础物理课程节选

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Like a human, it can quickly shift its center of gravity and change direction.

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Arresting, consistently absorbing stage pictures expertly follow the mournful flow of this slow-moving epic, while a powerhouse cast of singers and the Met Orchestra under the sure direction of Daniele Gatti ensure that the evening has both gravity and momentum.

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