to become an adult; to mature
成長する; 大人になる (seichou suru; otona ni naru)
"Children grow up so fast these days."
"子供たちは最近すぐに成長します。" (Kodomotachi wa saikin sugu ni seichou shimasu.)
to reduce the amount of money spent on something
to make use of a resource or opportunity effectively
to keep believing or trying despite difficulties
to make efforts to improve the areas where you are lacking
to not allow someone to go out; to hold inside
to stop buying unnecessary expensive things
