Extinction of the dinosaurs
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古生物学家就恐龙灭绝问题进行了讲座。
The paleontologist gave a lecture on the extinction of dinosaurs.
所有人都知道恐龙灭绝的原因。
Everybody knows what wiped out the dinosaurs.
大约在6500万年前恐龙灭绝了.
The dinosaurs died out roughly 65 million years ago.
小行星的撞击肯定会使附近的恐龙灭绝。
The impact of an asteroid surely would have killed the dinosaurs in the immediate vicinity.
古生物学家对有关恐龙灭绝知道的很多.
Paleontologists know plenty about the demise of the dinosaurs.
