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1·Relative dating assesses the age of a specimen in comparison to other specimens.

一种是测定相对年龄，通过与其他的样品的比较来确定待测样品的年龄。

2·For this reason I strongly recommend the use of relative dating, in the way which Rowling demonstrates in OotP.

鉴于这个原因，我推荐使用相关的年代来表示，就像罗琳在《凤凰社》中所用的一样。

3·My maternal grandmother had told me the story of a relative dating from the nineteenth century: a young woman fresh from Ireland a Catholic who'd married a Protestant.

我的外祖母曾告诉我一个亲戚的故事，那是19世纪的事情了：一位刚刚从爱尔兰来的年轻女子，她是位天主教徒，刚刚嫁给了一个新教徒。

4·The relative biogenic data and dating data are not enough. It only depends on the regional correlation of rock association characteristics.

但均缺少相关的生物资料及测年数据，所依靠的仅是岩石组合特征的区域对比。

5·Because they rely on estimation, relative techniques like stratigraphy are considered less precise than absolute techniques, like radiocarbon dating or verification from written records.

因为他们象地层学那样依赖相关的技术进行推测，其精确度不如用放射性碳元素断定或根据记录来断定年代的方法。