Fireflies use their light for attracting mates.

萤火虫用它们的光来吸引配偶。

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They affected to ignore her as of an inferior social status to themselves, and she despised their light talk.

他们假装对她不理不睬，认为她的社会地位不如他们，而她又瞧不起他们的轻薄言语。

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Waiting for their light. For a time.

正在等待着它们的光明。

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People who aren't connected to the electric grid often get their light from candles or burning wood.

VOA: standard.2009.12.13

This gives them their color. However,when light travels from air to snow, some light is sent back,or reflected.

VOA: special.2010.01.05

Their appearance changes endlessly with the light,the time of year, and the weather.

VOA: special.2009.10.07

The farther away they are, the faster they are moving, and the more their light is redshifted.

ECONOMIST: Astronomy

The flowers bloom in dramatic fashion, their light pink colour spreading across previously barren treetops to welcome spring.

BBC: Cherry blossom festivals amid tragedy

The latter is done by measuring the so-called redshift of their light.

ECONOMIST: Astronomy