break·throughBrE/ˈbreɪkθruː/NAmE/ˈbreɪkθruː/adjective[only before noun]inwhichaperformerortypeofproductissuccessfulforthefirsttime, whenitislikelytobeevenmoresuccessfulinthefuture突破性的◆Itwasabreakthroughalbumfortheband. 这是该乐队的成名专辑。◆breakthroughtechnology/products突破性技术/产品