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一个有趣的现象:但凡是打过网球的都一定言之凿凿地告诉你,发球是网球比赛里最重要的技术。可反过头来你就会发现,无论是学网球的还是教网球的,都把发球放在教学的最后一环。这是为什么?既然认定发球是最重要的技
An interesting phenomenon: Whenever playing tennis, it is certain to tell you that serve is the most important technique in tennis games. You can find the opposite of what you will find, both in tennis and in tennis. This is why? Since serving is the most important technical