就在这个时候，美国国家航空航天局决定通过拍摄黄石公园的照片来测试一些新的高空照相机。

Just at this time NASA decided to test some new high-altitude cameras by taking photographs of Yellowstone.

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在这个设备的测试中，敏感相机被固定在一个不引人注意的头戴式支架上。

In test runs of the device, the depth camera was affixed to a head-mounted rack that is anything but inconspicuous.

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声波定位仪正好用来检测这种情况；而在船只上远程遥控运行、云集在此处附近的地震测试器和相机也正好派上用场。

Sonar is being used to monitor the situation; so are seismic tests and the cameras on the remotely operated vehicles swarming round the site.

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