Doctor: We have to check your long distance vision. Let me also check you for color blindness.

医生：您需要检查一下远视力和色盲。

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To implement target detection and tracking in long distance, a kind of high resolution omni-directional vision system is designed by catadioptric imaging.

针对远距离的目标检测与跟踪，采用折反射成像方式，设计了一种高分辨力全向视觉系统。

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Perfect Night Vision binocular for long range observation has multi-coated 90mm glass lenses for optimum clarity and distance.

完美的夜视远距离观察双眼具有多涂层的最佳距离90毫米的清晰度和玻璃镜片。

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We were walking on the recently created Abraham Path, Turkey's newest trekking route and the northernmost section of an ambitious vision begun in 2008 to create a long-distance trail through the Middle East based on the journey of the Prophet Abraham.

BBC: Echoes of an ancient land along Turkey's Abraham Path