| 释义 |
rockfall
rock·fall R0277525 (rŏk′fôl′)n. A fall of rocks, as from a cliff.rockfall (ˈrɒkˌfɔːl) nan instance of rocks breaking away and falling from an outcrop
rockfall
rockfall[′räk‚fȯl] (geology) The fastest-moving landslide; free fall of newly detached bedrock segments from a cliff or other steep slope; usually occurs during spring thaw. The rock material moving in or moved by a rockfall. |