保持

maintain; keep; preserve; hold; remain; retain; stay; sustain; keep up; persist; poise; maintenance; preservation; retention; conservation; sustenance; maintained; sustained; holding

繁荣

prosperous; thriving; flourishing; booming; buoyant; flower; prosper; flourish; thrive; boom; prosperity; bonanza; buoyancy; well-being; up; plenty

稳定

stable; firm; calm; steady; secure; equable; settled; stabilized; constant; consistent; stationary; stabilize; maintain stability; stably; steadily; firmly; stability; steadiness; stabilization; constancy; on an even keel