Shadows can indicate the time of day. Comparing weather reports with date stamps can reveal whether a video or photograph really was taken on a particular date.

声音可以起作用，阴影也能显示出白天的某个时段，根据日期戳对照天气预报可以知道一个视频或照片是否真的拍摄于某个特定的日期。

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The most beautiful times of day are dawn and dusk when shadows are long, offering contrast, refuge and form.

一天中最美好的时刻是清晨和黄昏：影子很长，可以形成对比、提供庇护、勾勒轮廓。

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During the day, have your beautiful shadows among the crowd; night dreams have your sweet smile. Acquaintance you are the pride of my life!

白天，人群之中有你美丽倩影；夜晚，梦里有你甜蜜的微笑。相识你是我一生的骄傲！

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Butt has lived in the shadows of team-mates Beckham and Paul Scholes for Manchester United and England - but this was the day he could hog the spotlight himself.

BBC: Owen and Butt lead the charge

His decision to have the sycophant group remain in the back of the Duke's apartment in the shadows during Gilda's confessional "Tutte le feste (Each holy day)" was jarring, and there the chorus remained through Damrau's chilling high note that ended the "Si, vendetta" duet.

WSJ: Mayer's 'Rigoletto,' set in Vegas, opens at Met

Andrew Strauss claimed an extra half hour to try to finish off Australia, but with the shadows lengthening Smith and Siddle showed enough nous to push the match into the final day, taking advantage of some hyper-attacking fields to add 42 runs in 10 overs.

BBC: Ashes: England close in on series victory in Australia