[] () to start selling products or services in a new area or to a new group of customers（产品或服务）进入，打入（某新地区或新顾客群）◆The research helps companies to identify and penetrate new markets.该项研究帮助公司确定并打入新市场。◆The chain has not yet penetrated our major cities.该连锁集团尚未打入我们的主要城市。