1. Generally speaking, the interiors of plates are geologically uneventful. 一般来说，板块的内部在地质上是平静的。
2. Cases in which many species become extinct within a geologically short interval of time are called mass extinctions. 许多物种在地质上很短的时间间隔内灭绝的情况称为大灭绝。
3. Holocene sediments contain remnants of more recent plants and animals, so it's pretty easy to differentiate geologically between these two Epochs. 全新世的沉积物中含有较新的动植物遗迹，因此很容易从地质学上区分这两个时期。
4. The region is extremely unusual geologically, Royden says, because of the very steep slopes at the boundary between the Sichuan Basin to the east and the Tibetan plateau to the west. 罗伊登说，这个地区在地质上极其不寻常，因为在东部的四川盆地和西部的西藏高原之间的边界上有非常陡峭的斜坡。
5. The region is extremely unusual geologically, Royden says, because of the very steep slopes at the boundary between the Sichuan Basin to the east and the Tobetan plateau to the west. 罗伊登说，这个地区在地质上极其不寻常，因为在东部的四川盆地和西部的托比坦高原之间的边界上有非常陡峭的斜坡。
