伸展

(1)act of expanding in scope; making more widely available; "extension of the program to all in need"

(2)範囲を拡大する行為

(3)より広くいきわたるようにする

(4)the act of increasing (something) in size or volume or quantity or scope

(5)（何かの）大きさや容量や分量や範囲を増やす行為