新生纪(Cenozoic),是指地球四大地质历史世纪的最后一纪,它可从六千五百万年前直到现今。
在最后一层白垩纪岩石和第一层新生代岩石之间,常常有一层薄薄的粘土。
Between the last layer of Cretaceous rock and the first layer of Cenozoic rock, there is often a thin layer of clay.
在19世纪70年代,裸奔是一项很流行的玩笑,一种勇气的表现,大学新生也通常做此声明。
In the 1970's streaking was a popular prank, a display of courage, and a general right of passage for college freshmen.
Singhal和他们同事自20世纪90年代就跟踪研究涉及两项报告的儿童,当时他们还是新生儿。
Singhal and colleagues followed up children who were involved in two studies from the 1990s when they were newborn babies.
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