一、现状。众所周知界外球进场压线是一项相当重要的技战术,尤其在被清场的劣势情况下。但平时比赛往往看到不少球员进场压线压不好。究其原因是平时练的机会少。平时大部分时间都是没有裁判员的康乐比赛,界外球多是由击球员自己用手或脚把自己的球压在自己想压的边线外缘,这样 First, the status quo. It is well-known that the extra-terrestrial ball approach pressure is a very important tactic, especially in the case of being cleared. But usually the game often see a lot of players into the line pressure is not good. The reason is usually less practice opportunities. Usually most of the time there is no referee recreational competition, the extra ball is hit by the batter himself by hand or foot pressure on their own want to suppress the edge of the edge, so