screes
n.
（常用复数）小石子，岩屑堆( scree的名词复数 );
例句:
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There was a great clamor of squawks and screes from the crowd when first he moved.
他刚一动弹,鸥群中就嘎嘎、嘎嘎地嚷起来.
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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.