大约6500万年前，一颗宽至少5英里的彗星或小行星撞上了地球，并在地表炸出了一个大洞。
Some 65 million years ago, a comet or asteroid at least five miles wide struck the earth and blasted out a tremendous crater.
无边无际的大海里，最大的鱼竟然就像学校的校车一般长，重量更是高达5万英磅。从正面看上去，它的嘴宽的足够吸进一辆小汽车。
The biggest fish in the sea is as long as a school bus, weighs as much as 50, 000 pounds, and has a mouth that looks, head-on, wide enough to suck down a small car.
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