Just for argument's sake, suppose we disagree.
为了讨论各种情形,让我们假设我方不同意时的处理方法。
The remains of plants and animals that lived on land are much more rarely preserved, for there is seldom anything to cover them over.
曾在陆地上生活过的动植物的遗体被保存下来的更为罕见,因为陆地上几乎没有什么东西覆盖它们。