[] something that is achieved, especially by reducing the power or success of sth else（尤指通过消耗或削弱其他事物取得的）进展◆This deal is their first major inroad into the American market.这笔交易是他们进军美国市场的首次重大收获。●make inroads (into/on sth)if one thing makes inroads into another, it has an important effect on the second thing, especially by reducing it, or influencing it消耗，削弱，影响（某事物）◆They are likely to make further inroads into the UK market.他们很可能进一步进入英国市场。