【for hundreds of millions of years】
【翻译】千百年来
【例】
1
Life on earth flourished for hundreds of millions of years at much higher co2 levels than we see today.
地球上的生命在二氧化碳含量比现今我们所看到的水平高得多的情况下欣欣向荣了亿万年.
2
Species similar to those at whale falls may have depended on dead marine reptiles for hundreds of millions of years.
与鲸鱼尸体构成的生态系统类似的物种可能依靠着亿万年来死去的海洋爬行动物的尸体生存.
3
Bacteria have been evolving in response to threats from other species,including fungi,for hundreds of millions of years.
几亿年来,为应对来自真菌等其他物种的威胁,细菌在持续进化.
跟多了解请参考：http://fanyi.baidu.com/translate?query=for%20hundreds%20of%20millions%20of%20years&lang=en2zh#en/zh/for%20hundreds%20of%20millions%20of%20years