汉译英，大家帮帮忙

Natural selection, survival of the fittest.

Natural selection, survival of the fittest

物竞天择不知道怎么翻:我的man第six感tell me应该是Natural selection适者生存...survival of the fittest or add一个定冠词也是可以的...
P.S.:一定给我最佳答案不然阉了你丫的!!!把你从哪儿变的变回哪去...永世成为泻鳖3大闸蟹龟头王子卸小鸟...