122 篇文章
They first appeared more than 400 million years ago
15 0 1

They first appeared more than 400 million years ago 它们最早出现在四亿多年前

Seventy million years after the great melt,
15 0 0

Seventy million years after the great melt, 大融化7000万年之后

Twenty million years later, life faced one of its greatest challenges...
15 0 2

Twenty million years later, life faced one of its greatest challenges... 2000万年后 生命面临又一个巨大的挑战

Forty million years later, and a new era of life has begun,
15 0 2

Forty million years later, and a new era of life has begun, 四千万年后 一个新的生命纪♥元♥开始

And in the tropical shallows 508 million years ago,
15 0 0

And in the tropical shallows 508 million years ago, 在5.08亿年前的热带浅海中

530 million years ago,
15 0 0

530 million years ago, 5.3亿年前

when Earth was stable for 100 million years.
15 0 0

when Earth was stable for 100 million years. 地球保持了一亿年稳定状态

They were to rule for over 150 million years.
15 0 1

They were to rule for over 150 million years. 它们将统治超过1.5亿年

There are more than ten million species of plant and animals alive today.
15 0 1

There are more than ten million species of plant and animals alive today. 如今 超过1000万种动植物 生活在地球上

Two million years ago, and our planet is a very different place.
15 0 1

Two million years ago, and our planet is a very different place. 200万年前 我们的星球与现在完全不同