pitchn.球场;程度;音调;推销;投掷;街头商贩摊位;沥青;树脂;松脂v.投;颠簸;搭帐篷;定调;推销;用沥青覆盖
pitch road沥青路面
pitchboard楼梯踏步三角定线板
pitchwomann.女广告员; 女宣传员
pitch intovt.开始努力工作(投身于)
pitch play齿隙
pitch shot击高球
pitch grid变节距栅极
pitch tube树脂管
pitch spot树脂斑
pitch pipen.[乐]律管;定调管