恐龙大发现（十一）

Fabulous Dinosaurs ⑾

恐龙去哪儿了？到目前为止．没有人知道为什么恐龙会灭绝，科学家们一直在寻找答案。有科学家认为，一颗巨大陨石撞击地球，导致了恐龙的灭绝。

Nobody really knows why the dinosaurs disappeared, but scientists are trying to find out. Some think it was because a huge meteorite hit the Earth, causing the dinosaurs to suddenly die out.