shelving filter 斜坡滤波器 filter[英][ˈfɪltə(r)][美][ˈfɪltɚ]n.滤波器; 滤光器; 滤色镜; [化] 过滤器;vi.过滤; 透过; 渗透;vt.过滤; 滤除;第三人称单数：filters过去分词：filtered复数：filters现在进行时：filtering过去式：filtered 例句:1.I need it to filter out callers.我需要它帮我过滤来电者.