rain gun的相關資料：
臨近單詞
Raindl
rain
rain/wind-induced vibration
Raindrops Keep Fallin'on My Head
rainstorm attenuation coeffident
rain - gauge network intensity
rainstorm-triggering mechanism
rainwater catchments engineering
Rain dribbled down the window.
rainwater purification processes
rain beating against the windows
Rain spatters on the pavement.
