有专家认为,学习发球技术越早,越容易掌握正确动作。人每时每刻都在形成自己的习惯,而行动又被这些习惯所支配。比如,穿鞋和袜子的顺序。是先穿右脚的袜子,再穿左脚的袜子,然后再穿右脚的鞋和左脚的鞋?还是先穿右脚的袜子,再穿右脚的鞋,然后再穿左脚的袜子和左脚的鞋?或是其 Some experts believe that the sooner learning the serve, the easier it is to master the correct action. People form their own habits all the time, and the actions are governed by these habits. For example, the order of wearing shoes and socks. Is to wear the right foot socks, then wear the left foot socks, and then wear the right foot shoes and left foot shoes? Or wear right foot socks, and then wear the right foot shoes, and then wear the left foot socks And left foot shoes? Or is it