[countable, usually singular] a level or point that sth reaches that is thought to be important重要水平；关键点位◆The price of oil has passed the $40-a-barrel mark.石油价格突破了每桶 40 元的关口。◆Unemployment remains below the four million mark.失业人数依然维持在 400 万的水平之下。Mark [singular] (followed by a number) a particular type or model of a machine or vehicle（后接数字）（机器或车辆的）型号，款式◆the Mark II engine二型发动机 ●ˌmake your/a ˈmark (on sth)to become famous and successful in a particular area出名；获得成功◆The company made its mark with its online payment service.这家公司在在线支付服务方面取得了成功。  ➡  idiom at line noun check mark