The front must fit into the opening like a plug, with no light or gaps visible.

前板必须像栓塞一样与开口紧密结合，不透光不见缝。

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Usually they stayed awake three to four hours past sunset, with no light exposure other than the faint glow of a small fire that would keep animals away and provide a bit of warmth in the winter.

通常，他们在日落后三到四个小时里仍然清醒着，而且除了用以驱赶野生动物并在冬天聊以取暖的微弱火光之外，他们别无其他光源。

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A portrait looks lifeless with no light and shade.

没有明暗色调的画像看上去是没有生气的。

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Far below sea level, they contain some of the harshest environments on Earth, with no oxygen and no light.

VOA: special.2010.11.10

They face unprecedented economic hardship, with no light at the end of the tunnel.

BBC: Should we feel sorry for Greece?

Among them was the unreleased 1986 ballad In A Large Room With No Light, which had long been a fan-favourite on bootleg recordings.

BBC: Prince to headline Montreux Jazz Festival

Three miles on this path, with no light beyond the scope of our high beams, no moonlight, no starlight, just trees and a blackness so heavy that we both stopped talking and stretched our necks until our foreheads were almost touching the windshield, trying to make sense of the tarry vastness around us.

NEWYORKER: Reverting to a Wild State