物竞天择 natural selection 例句：The pressure of natural selection is An irresistible force shaping all of nature. 物竞天择的法例是一种不成抗拒的培养天然界的力量，永无行境例句：And forever has no end. 永永久远,永无行境.
Natural selection, forever without limits
The thing competes it is selected , endless 参考材料：
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