Colluvial deposits at the foot of valley slopes usually affect only narrow strips of valley bottom.河谷坡脚处的崩积体通常只影响到谷底较窄的地带....

adj.塌积的...

colluvial的音标：colluvial的英式发音音标为：[kə'lu:vɪəl]colluvial的美式发音音标为：[kə'luvɪrl]...