The stark contrast is due to sunglint, in which the Sun is reflected off water surfaces back towards the astronaut observer on board the ISS.

由于日光返辉区(sunglint)的关系图像形成鲜明对比，此区域的水面将太阳光直接反射至ISS上观测的宇航员处。

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In this capacity, we have a role as an observer on their Board.

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None of the new investors were given voting board seats, though Saverin was given an observer seat.

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While the aircraft will have two safety pilots on board, the flights will be operated by on-board systems supervised by a ground-based observer pilot.

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