Summer hours were long, winter ones short; only at the spring and autumn equinoxes were the hours of daylight and darkness equal.

夏天的时间长，冬天的时间短；只有在春秋分点，白天和黑夜的时间才相等。

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There are also fewer hours of daylight in a 24-hour period.

一整天里的白天时间也较短些。

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In cooler climates, Onions may need fourteen to fifteen hours of daylight to start forming bulbs.

在寒冷气候条件下，洋葱可能需要14 - 15小时日照才能形成鳞茎。

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From dawn till dusk, the tea steeped in a pitcher on the blazing doorstep, recording the long hours of daylight in liquid form.

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She says the move would allow an extra 235 hours of daylight after work every year and deliver benefits including 100 fewer deaths from road crashes annually.

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This in itself puts pressure on the eyes, but exposure to between two and three hours of daylight acts as a counterbalance and helps maintain healthy eyes.

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