我喜欢白天开始变长。

I like having longer daylight hours.

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当冬天过去春天来临的时候，白天开始变长了。

As winter gave way to spring, the days began to lengthen.

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一些科学家主张春天非是始于三月，四月，或者五月。他们认为当夜晚逐渐变短白天开始变长，就是春回大地之时。

Some scientists claim that spring is not March, nor April, nor May, Instead, they say it is the time when the nights are getting shorter, the days longer.

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他们也由此认定，大多数动物——哺乳动物，鸟类，爬行动物，两栖动物和鱼类——在春天生育繁殖。因为春季白天开始变长，气温也日渐回升。

That is why, they believe, most animals — mammals, birds, reptiles, amphibians and fish — produce their young and multiply in spring.

youdao

他们也由此认定，大多数动物——哺乳动物，鸟类，爬行动物，两栖动物和鱼类——在春天生育繁殖。因为春季白天开始变长，气温也日渐回升。

That is why, they believe, most animals — mammals, birds, reptiles, amphibians and fish — produce their young and multiply in spring.

youdao