Run during light and Warmer Times of Day: If possible, run during the light hours so absorb that needed sunshine we rarely get in the winter.

在光线充足和一天最温暖的时候跑步：如果可能，在有光照的时候跑步，以吸收在冬季难以获得却又是必需的阳光。

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A third group are known as crepuscular: they thrive in the low light of dawn and dusk and remain inactive at other hours.

第三组被称为黄昏组：他们在黎明和黄昏的微光中茁壮成长，而在其他时间则不活跃。

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People did not object to making young children work long hours, in places that had bad air and bad light.

VOA: special.2010.08.01

Avoiding light at certain hours also is important to help the body clock reset.

WSJ: To Avoid Jet Lag This Summer, Travel Like a Scientist

Providing a constant light during daylight hours the bottle bulbs are promoted as a better choice than candles and electric lighting that may have dangerous or faulty wiring and could cause fires.

CNN: Plastic bottles light up lives

To observe such a distant, faint object, scientists had to collect light through the telescopes over 37 hours, letting more and more light accumulate to see as deep as possible.

MSN: Newfound galaxy may be most distant ever seen