1.
They embody snows that drifted down hundreds, or many thousands, or in some cases maybe a million years ago.
它们的体内是数百年，或数千年，有时甚至是数百万年前的降雪。
2.
large-toothed hominid of southern Africa; from 1.5 to 2 million years ago; formerly Paranthropus.
非洲南部大牙齿的原始人；1.5到2百万年前。
3.
The Ancients having explored this galaxy for millions of years before
古人们早在数百万年前就探索了整个银河
4.
Miss Li smiled, "These eggs were laid about 95 million years ago."
李小姐微笑着说：“这些蛋产于九千五百万年前。”
5.
Cretaceous The most recent period of the Mesozoic era, 145-66 million years ago.
白垩纪：地质年代中生代的最后一个纪，距今一亿四千五百万年至六千六百万年前。
6.
A million years ago, there were animals here before man came.
一百万年前，在还没有出现人类以前，这里就有动物。
7.
gracile hominid of southern Africa; from about 3 million years ago; formerly Plesianthropus_transvaalensis.
非洲南部体形纤弱的原始人；大约三百万年前；以前的迩人。
8.
The prehistoric reptile lived in the Cretaceous period, about 125 million years ago.
这只史前爬行动物生活在约一亿两千五百万年前的白垩纪。
9.
The energy in coal and oil came from the sun, stored there by the plants of millions of years ago.
煤和石油里的能量是来自太阳而由数百万年前的植物储藏起来的。
10.
It is thought that millions of years ago this liquid mass pushed upward through cracks in the earth's crust.
人们认为数百万年前这种岩浆从地壳的裂缝处向上涌出。
11.
In fact, it is thought that a meteor killed the dinosaurs millions of years ago.
事实上，有人认为在数百万年前就是一块陨石造成所有的恐龙灭绝。
12.
They could be left over from a burst of star formation several million years ago.
它们有可能是数百万年前的恒星暴增所残存下来的。
13.
Coal was made by the rocks pressing on trees and plants which died millions of years ago.
煤产生于岩石对数百万年前枯死的树木和其他植物的挤压。
14.
The rapid uplift of the Qinghai-Xizang (Tibet) Plateau (QXP) determined the formation of the Yangtze River and Yellow River 1 million years ago.
自1百万年前以来，青藏高原的迅速隆起确定了长江、黄河的形成。
15.
Twenty years ago, I began studying how people become millionaires.
20年前，我开始研究人们如何成为百万富翁。
16.
large-toothed hominid of eastern Africa; from 1 to 2 million years ago; formerly Zinjanthropus boisei.
非洲东部大牙齿的原始人；一到两百万年之前；以前的东非博伊西人。
17.
The United States has a history of only one hundred and eighty years, and sixty years ago it too produced four million tons of steel, so we are sixty years behind.
美国建国只有一百八十年，它的钢在六十年前也只有四百万吨，我们比它落后六十年。
18.
they determined that these beasts wandered the earth for millions of years and stopped to exist some sixly million years ago.
他们确定这些野兽在地球上游荡了上百万年，大约六千万年前灭绝了。