The British Trust for Ornithology found that, in the period 1971-1995, 51 species of birds tended to nest and lay eggs earlier (around a week or more on average) as background temperatures increased.
英国鸟类学信托基金会(The British Trust for Ornithology)发现,在1971 - 1995年期间,由于背景温度升高,51种鸟倾向于提前筑巢下蛋(平均约一周或更长时间)。
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PC sports a different hair style of each time period, and ends by saying, "this time it's going to be different, trust me."