英文關鍵字
pile
stone
cement
construction
road
side
pavement
aggregate
soil
cutting
street
landslide
rural
uttarakhand
india
retaining
wall
worker
architecture
block
outdoor
rock
sandstone
blocks
sedimentary
site
stonewall
structure
surface
texture
deforestation
population
riverbed
round
row
spread
erosion
cinematic
video
slow
motion