英文關鍵字
falling
rain
induces
downward
flow
water
lower
elevations
levels
precipitation
atmospheric
phenomenon
hydrological
cycle
natural
process
weather
droplets
gravitational
pull
drainage
liquid
earth39aph39s
surface
meteorological
force
movement
moisture
environmental
event
effect
conditions
hydrodynamics
attraction
fluid
dynamics
pattern
rainwater
interaction
field
system
meteorology
descent
climatic
rainfall
physics
mechanism
impact
phenomena
formation