标题: An Exact Number 准确数字 [打印本页] 作者: zhoujiazui741 时间: 2011-7-8 15:51 标题: An Exact Number 准确数字
A tourist was visiting New Mexico and was amazed at the dinosaur（恐龙） bones lying about.
How old are these bones? the tourist asked an elderly Native American, who served as a guide.
Exactly one hundred million and three years old.
How can you be so sure? inquired the tourist.
Well, replied the guide, a geologist（地质学家） came by here and told me these bones were one hundred million years old, and that was exactly three years ago.
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