英语笑话:An Exact Number

　　A tourist was visiting New Mexico and was amazed at the dinosaur 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 came by here and told me these bones were one hundred million years old, and that was exactly three years ago.

　　一位游客在新墨西哥游览。他对随处可见的恐龙化石甚感惊奇。

　　“这些化石有多长的历史?”游客问一个上了年纪的当地美国人。他是作向导的。

　　“整整十亿零三年了。” “你怎么这么肯定?”游客问道。 “哦，”向导回答道，“一个地质学家来过这儿，他告诉我说这些化石有十亿年了，再加上那是整整三年前的事了。”

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