用英语解释DInosaurs existed on Earth millions of year ago

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用英语解释DInosaurs existed on Earth millions of year ago

这样可以吗:Millions of year ago,There were many dlnosaurs living on earth.反正意思都是说几百万年前地球上有恐龙

DInosaurs had lived on Earth before millions of years.

一百万年前,地球上存在着恐龙.