had

380 篇文章
Two great dynasties had emerged
15 0 1

Two great dynasties had emerged 两个伟大的王朝已经崛起

For where plants had paved the way,
15 0 1

For where plants had paved the way, 植物铺平了道路

plankton had been the catalyst for animal life.
15 0 1

plankton had been the catalyst for animal life. 浮游生物是动物生命的催化剂

and Dunkleosteus had reigned for 20 million years.
15 0 1

and Dunkleosteus had reigned for 20 million years. 邓氏鱼已经统治了2000万年

For those who had sought refuge in the deep,
15 0 2

For those who had sought refuge in the deep, 对于那些在深海寻求庇护的生物来说

almost half the planet's ice had melted.
15 0 1

almost half the planet's ice had melted. 地球上几乎一半的冰已经融化

Within a few more, it had entirely gone.
15 0 0

Within a few more, it had entirely gone. 又过了几千年 冰完全消失

The great melt had begun.
15 0 1

The great melt had begun. 大融化开始

Carbon dioxide levels had bounced back,
15 0 3

Carbon dioxide levels had bounced back, 二氧化碳水平回升

The hunted had to adapt
15 0 2

The hunted had to adapt 猎物必须适应变化