gullies造句
Roadsidegulliesarenormallyclearedmanuallyonceeverytwoweeks.Theexistingnaturalgulliesandvalisesshallbeplanedtoensuresmoothflowingofwater,thebedofgulliesaretobepavedifnecessary.Volcanicmudflows(lahars)p...
Roadsidegulliesarenormallyclearedmanuallyonceeverytwoweeks.Theexistingnaturalgulliesandvalisesshallbeplanedtoensuresmoothflowingofwater,thebedofgulliesaretobepavedifnecessary.Volcanicmudflows(lahars)p...