不可能是郭跃

<span style="color: rgb(51, 51, 51); font-family: arial, 宋体, sans-serif; line-height: 24px; text-align: justify;">都是无用的。</span>

<span style="color: rgb(51, 51, 51); font-family: arial, 宋体, sans-serif; line-height: 24px; text-align: justify;">因此发好这两类发球</span>

<span style="color: rgb(51, 51, 51); font-family: arial, 宋体, sans-serif; line-height: 24px; text-align: justify;">相比于转与不转发球，</span>

<span style="color: rgb(51, 51, 51); font-family: arial, 宋体, sans-serif; line-height: 24px; text-align: justify;">就容易吃侧旋偏射出台；</span>

<span style="color: rgb(51, 51, 51); font-family: arial, 宋体, sans-serif; line-height: 24px; text-align: justify;">不像侧旋发球因</span>

<span style="color: rgb(51, 51, 51); font-family: arial, 宋体, sans-serif; line-height: 24px; text-align: justify;">伤人也易伤己。我</span>

<span style="color: rgb(51, 51, 51); font-family: arial, 宋体, sans-serif; line-height: 24px; text-align: justify;">发出的球就会带</span>

<span style="color: rgb(51, 51, 51); font-family: arial, 宋体, sans-serif; line-height: 24px; text-align: justify;">再用相同的准备姿势</span>

<span style="color: rgb(51, 51, 51); font-family: arial, 宋体, sans-serif; line-height: 24px; text-align: justify;">但发侧上侧下时需注意</span>

<span style="color: rgb(51, 51, 51); font-family: arial, 宋体, sans-serif; line-height: 24px; text-align: justify;">侧上侧下我采用</span>