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

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。

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When I breathe, my goal is to keep one goggle eye in the water.

当我换气时，我要保持一只眼睛在水里。

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

ECONOMIST: Facial monitoring