1. Contained within the rock strata is evidence that the region was intensely dry 15,000 years ago. 岩层中的证据表明该地区在15,000 年前曾经非常干旱。
2. By following the fossils, Smith was able to put all the strata of England's earth into relative temporal sequence. 通过研究这些化石，史密斯能够把英国土地所有的地层按相对的时间顺序排列起来。
3. Instead, they are other volcano types, like strata volcanoes, for example, which are a result of the tectonic plate movement. 相反，它们是其他类型的火山，比如地层火山，是板块运动的结果。
4. As he collected fossils from strata throughout England, Smith began to see that the fossils told a different story from the rocks. 当史密斯在英国各地的地层中收集化石时，他开始发现这些化石讲述的故事与岩石不同。
5. While rock between two consistent strata might in one place be shale and in another sandstone, the fossils in that shale or sandstone were always the same. 存在于两个相连地层之间的岩石，可能在这一层是泥板岩，而在另一层中是砂岩；但存在于泥板岩或者砂岩中的化石往往都是相同的。
