They lived on the earth tens of millions of years ago long before humans.
千百万年前他们就居住在地球上，比人类的出现要早得多。
The Children's Online Privacy Protection act, or Coppa, was enacted over a decade ago, long before the advent of social media and smartphones.
《儿童上网隐私保护法》或称Coppa，是在十几年前制定的，远远早于社会媒体和智能电话的出现。
This all supposedly happened about 4.4 billion years ago, long before there was any life on Earth to gaze up and see the strange sight of dual moons.
双月撞击被假定发生于距今44亿年前，距地球上出现生命还有很久，没有任何生物会仰头凝视双月辉空的奇异画面。
Dinosaurs lived on the earth tens of millions of years ago, long before humans came into being.
千百万年前，恐龙就在地球上生活，比人类的出现要早得多。
They lived on the earth tens of millions of years ago, long before humans came into being and their future seemed secure at that time.
千百万年前， 恐龙就在地球上生活，比人类的出现要早得多，当时它们的前景好像也很安全。
They lived on the earth tens of millions of years ago, long before humans came into being and their future seemed secure at that time.
千百万年前，恐龙就在地球上生活，比人类的出现要早得多，当时他们的前景好像也很安全。
This was many years ago, long before Oz came out of the clouds to rule over this land.
早在奥芝从云端里下来管理这个地方以前，这样的生活，已经许多年了。
Based on this gene shuffling, the scientists estimated that humans and the ancestors of the Altai Neanderthals interbred about 100,000 years ago - long before people were thought to have left Africa.
基于这种基因重组，科学家们估算出，人类与阿尔泰山脉尼安德特人的祖先在大约10万年前进行过混种繁殖——远在普遍认为的人类离开非洲的时间之前。
Based on this gene shuffling, the scientists estimated that humans and the ancestors of the Altai Neanderthals interbred about 100,000 years ago - long before people were thought to have left Africa.
基于这种基因重组，科学家们估算出，人类与阿尔泰山脉尼安德特人的祖先在大约10万年前进行过混种繁殖——远在普遍认为的人类离开非洲的时间之前。
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