Hundreds of millions of years
亿万年───Hundreds of millions of years
What was around the bend in rivers hundreds of millions of years ago?───几亿年前，蜿蜒的河流的两岸是什么呢？
Scorpians have survived for hundreds of millions of years by being extremely adaptable.───蝎子具有非常大的适应性，这种品种已经在世界上存活了几亿年了。
Another more intriguing possibility is that the genetic information needed to make toes somehow survived for tens or perhaps hundreds of millions of years in the lizards and was reactivated.───另一种更有趣的可能性是，使蜥蜴的脚趾成形的基因信息，以某种方式存活了几千万年甚至几亿年，而且被重新激活了。
Theory holds that the cloud ought to light up as the density increases during its collapse, which can take hundreds of millions of years.───理论保持，云彩应该容光焕发当密度增加在它的崩溃期间，可能需要成千上万的岁月。
But in this case, "sooner or later" means hundreds of millions of years, and there would be plenty of warning.───但假使这样的话，“迟早”也意味着数亿年的时间，而其间将会有大量的前兆。
What was around the bend in rivers hundreds of millions of years ago?───亿万年前，河流转弯处的两岸会有怎样的风景呢？
If so, then modern vent fauna should be largely unchanged from those that existed hundreds of millions of years ago.
On a geologic time scale of millions to hundreds of millions of years, Earth is far less stable.
As far as we can tell Earth's atmospheric oxygen has remained at about 20 percent for hundreds of millions of years.