一些客户研究公司也使用带目镜的摄像头来跟踪眼动，从而确定被试在看什么。

Some consumer-research companies also employ goggle-mounted cameras to track eye movements so they can be sure what their subjects are looking at.

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然后用三角形带取代三角形，从而减少索引数量。

Next, you reduce the number of indices by using triangle strips instead of triangles.

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这种带足够窄以至于形成电学带隙，从而拥有开关性能。

The ribbons are narrow enough to have an electronic bandgap and thus switching properties.

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