两次喷发之间可能过去了数百万年。
一些科学家认为过去大量海洋生物的灭绝,将引起数百万年后地球碳循环上下幅度变大。
Some scientists think that massive ocean extinction events in the past caused Earth's carbon cycle to fluctuate wildly for millions of years afterwards.
据认为,与地球一样,在过去数百万年里火星也经历了全球气候变化。
Mars, like Earth, is believed to have experienced global climate changes over the past few million years.
数十年来,许多地质学家认为,过去数百万年必定发生了一连串的个别喷发,才能造成广大的毕夏普凝灰岩。
For decades, many geologists assumed that a series of distinct eruptions over millions of years must have occurred to produce the extensive Bishop tuff.
数十年来,许多地质学家认为,过去数百万年必定发生了一连串的个别喷发,才能造成广大的毕夏普凝灰岩。
For decades, many geologists assumed that a series of distinct eruptions over millions of years must have occurred to produce the extensive Bishop tuff.
应用推荐