The clothes are available in warm natural colours.

这些衣服有各种自然的暖色调可供挑选。

《牛津词典》

During this time when fewer natural foods are available and air temperatures are lower, extra feeding can keep a bird warm and well.

在这段时间里，自然中鸟类的食物越来越少，空气温度也越来越低，额外的喂养可以让鸟类保持温暖和健康。

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From there on, the remaining chapters are captivating natural history, arranged in neatly named sections: "fluff", how feathers keep birds warm and dry.

从那开始，剩下的章节都是引人入胜的自然史，以巧妙命名的章节排列：“绒毛”，羽毛如何让鸟类保持温暖而干燥。

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This is because cold oceans absorb CO2, and gradually release it when they warm due to natural causes.

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The Fall 2012 palette embraces many of the rich colors of autumn, such as, warm and cold natural beige, chestnut, brick red, copper, orange, musk green, blue and grey.

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