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。”