開拓

(1)the act of making some area of land or water more profitable or productive or useful; "the development of Alaskan resources"; "the exploitation of copper deposits"

(2)ある地域や水域の収益を増やしたり、生産性や利用価値を高める行為

(3)the conversion of wasteland into land suitable for use of habitation or cultivation

(4)荒地を、居住や農業に適した土地に転換すること