of

4391 篇文章
that held the embryo in its own private pool of fluid.
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that held the embryo in its own private pool of fluid. 将胚胎保护在“私家泳池”之中

embryo fluid private pool own held of in that its the
and the supercontinent of Pangaea was born.
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and the supercontinent of Pangaea was born. 超级大♥陆♥“盘♥古♥大♥陆♥”诞生

pangaea supercontinent was born of the and
No matter what great heights amphibians reached in their conquest of land...
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No matter what great heights amphibians reached in their conquest of land... 不论两栖动物 在征服陆地的过程中达到如何的高度

conquest amphibians reached matter heights what great land their no of in
Barely the size of a human thumbnail,
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Barely the size of a human thumbnail, 它仅有人类指甲般大小

thumbnail human size of the barely a
Their only means of escape
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Their only means of escape 唯一的逃生方法

means escape only their of
This is the strawberry dart frog of Costa Rica.
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This is the strawberry dart frog of Costa Rica. 这是哥斯达黎加的草莓箭毒蛙

strawberry dart rica costa frog is of the this
But marsh frogs have evolved some quirky adaptations of their own.
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But marsh frogs have evolved some quirky adaptations of their own. 但是湖侧褶蛙也进化出了 一些奇特的适应性

quirky adaptations frogs own marsh evolved some their of have but
Hundreds of millions of years after Anthracosaurus,
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Hundreds of millions of years after Anthracosaurus, 石炭鲵出现之后几亿年

anthracosaurus hundreds millions after of years
...of newts,
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...of newts, 有蝾螈

newts of
Today, there are more than 8,000 species of amphibian.
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Today, there are more than 8,000 species of amphibian. 今天有超过8000个两栖动物物种

amphibian today than species more of are there