4、打：

<span style="font-family: Arial, Helvetica, sans-serif; line-height: 25.71428680419922px; ">身前击球是指在身体的重心--肚脐前方击球後</span>

<p>大家好今天打球吗？</p>

<span style="font-family: Arial, Helvetica, sans-serif; line-height: 21.111112594604492px; ">必须要打进前四。今天在成绩上比昨天好一些</span>

<span style="font-family: Arial, Helvetica, sans-serif; line-height: 25.71428680419922px; ">大臂跟小臂不要打得太开, 如果打开成180度</span>

<strong>具有一定竞技性的运动才能激发人们运动的兴趣。</strong>

<b style="line-height: 25.71428680419922px; font-family: Arial, Helvetica, sans-serif; ">战胜对手。特别是实力相当的对垒，更是全神贯注</b>

<span style="line-height: 25.71428680419922px; ">F组冯天薇福原爱资格赛选手</span>

<span style="font-family: Verdana;">&nbsp;Free hand on table 不执拍手扶台&nbsp;</span>

一般人只要爱上了乒乓球，就没有几个人不被它的魅力所俘获，乒乓球一点都不缺少痴迷者。</b><br/><br/>

<span style="font-family: Arial, Helvetica, sans-serif; line-height: 25.71428680419922px; ">认定无缘世乒赛单打比赛的郭跃也随队出发</span>