Alerted by a noise downstairs, he sat up and turned on the light.

楼下的响声使他警觉，他坐起来打开灯。

《牛津词典》

The noise from the LRAD is directed like a ray of light and travels only into the ears of that person, but it is not deadly.

远程定向声波发射器（Long Range Acoustic Device）发出的噪音像光线一样，进入指定人的耳朵中，然而它并不致命。

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The Canadian study tested a five-week program that also emphasized sleep restriction, controlling negative thoughts and avoiding stimuli like light and noise in the bedroom.

加拿大的研究测试了一个五周的项目，也是强调睡眠限制，控制负面的想法和避免如卧室内灯光和噪音的刺激。

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The estate cannot be forced to stop the flights as light aircraft noise is not covered by statutory noise nuisance.

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The near-infrared light "appends noise to photographed images without affecting human visibility, " he said.

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He knew the light and every noise.

NEWYORKER: Teaching