These distances, in turn , govern the size of the projected image.

另外, 焦距也会掌控投影的大小.

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Astronauts walk on a treadmill moving base , while watching a projected image that's also moving.

受训练的宇航员将在跑步机上一边行走, 一边观看研究人员准备的动态图像.

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Likewise , read from your computer monitor rather than turning toward the projected image as you speak.

同样,当你讲话时, 要从电脑屏幕上阅读而不要面向投影影像.

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