词典释义：
双语例句
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The bunching up of much of the world's biodiversity along the equatorial regions contrasts with the rapid drop-off in organisms that eke out a living in more temperate and polar regions.
世界上多数的生物歧异性在赤道地带绽放，相对地，在气候较温和的地区或极地，生物种类稀少的简直像苟延残喘。