加えること

(1)the act of adding one thing to another; "the addition of flowers created a pleasing effect"; "the addition of a leap day every four years"

(2)あるものを他のものに加える行為

(3)a component that is added to something to improve it; "the addition of a bathroom was a major improvement"; "the addition of cinnamon improved the flavor"

(4)何かを改善するためにそれに加えられる要素

(1)