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在绝大多数人的印象中,恐龙早已在地球上灭绝。而其灭绝的原因,乃是因为在白垩纪末期(距今6500万年前后),有一颗行星与地球相撞,其巨大的动能造成了地球剧烈震动,以致物质融化甚至气化,大量物质被抛向空中,从而使大量尘埃物悬浮于平流层,长达数年之久,再导致光合作用受阻,食物链中断。恐龙即在如此突发事件中,在如此恶劣的环境中灭绝了。然而,经过科学家的进一步研
In the vast majority of people’s minds, dinosaurs have long been extinct on Earth. The reason for its extinction is that at the end of the Cretaceous period (about 65 million years ago), a planet collided with the earth and its huge kinetic energy caused violent earth shaking so that the matter melted or even gasified. A large amount of matter was Thrown into the air, so that a large number of dust suspended in the stratosphere for several years, then led to blocked photosynthesis, the food chain is interrupted. Dinosaurs were extinct in such a harsh environment in such a sudden event. However, after further research by scientists