Rockfalls的相關資料：
臨近單詞
Rockxiu
rock
Rock cross-cut coal uncovering
Rocks hurtled down the cliffs.
rock block with low permeability
Rock blastability classification
rock and soil engineering actions
rock-drilling jamming mechanism
rock-water chemical interaction
rock layer pressure movement rule
rock drilling and blasting method
rock core unloading-disturbance
