He has built up a not inconsiderable business empire.他已建立起一个具有相当规模的商业帝国。That newspaper has established a leak and has published many inside scoops.该报已建立了一条获得秘密消息的渠道并刊登了许多内幕新闻。Work the edges of the established market, eroding it away bit by bit.从已建立的市场边缘下手,一点一点地将之蚕食。