selection advantage的意思|示意

The best guesses are that feathers evolved either for insulation (as fur did in mammals) or for display, and that natural selection took advantage by turning them into a means of transport.

对此最好的猜测便是，羽毛的出现要么是为了护身(就像哺乳动物的毛皮)，要么就是为了作秀；此外，自然选择就择优而把某些动物的羽毛变成了它们的交通工具。

Now at version 5, Preview has undergone numerous improvements over time, but its Annotations toolbar, easy selection of columns, and image editing capabilities emphasize its advantage for users.

目前版本5的预览，随着时间的推移虽经历了无数次改进，但它的注释工具栏、专栏的简易选取以及图像编辑能力强调了作为其使用者的优点。

It stuck, because natural selection favors new traits that give their owners a survival advantage.

它能被保存下来是因为自然只选择那些有生存优势的新特点。