Reflections from the background can reproduce as black dead zones. To prevent them, build a de facto light tent around your subject by completely surrounding it with lights, diffusers, and reflectors.

背景的反射光可能会造成画面出现死黑区域，为避免出现这种情况，应在被摄主体周围布满灯、柔光罩和反光板，事实上起到柔光棚的作用。

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A dead horse is quite different from a black horse.

死马和黑马是不一样的。

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Black dots show where dead zones have been observed, but their size is unknown.

黑点代表那些已经观测到的但面积还未确定的死亡区域。

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Mr Black was shot dead the next morning after leaving his Cookstown home to travel to the high security prison.

BBC: David Black murder accused 'played integral role'

On the 1 November, prison officer David Black was shot dead as he drove along the M1 on his work to work at Maghaberry prison.

BBC: Dissident republicans 'remain determined to kill'

Knowing such itineraries might help us to better understand the nature of massive die-offs (thousands of black birds falling dead out of the sky, for example), or of the itineraries of bio-invasives such as the Burmese Pythons in the Everglades.

FORBES: The Murky Future of Conservation