These screes are generally small pieces of rock which have become detached from the rock mass.

这些碎石通常都是些小石块，它们从岩体上分离下来。

There are many V-shaped ravines containing small pools or screes of extremely varied and pretty stones.

有很多V型山谷，其间有些小水池和石堆，满是各式各样且特别漂亮的石头。