所谓羽毛球击球线路是指球被运动员击出后在空中运行的轨迹和场地之间的关系。
是的，按照规则13 - 2的规定，他允许改善了他的击球路线。
Yes, under Rule 13-2, for allowing his line of play to be improved.
定义：击球路线“击球路线”是指球员在打出一杆后期望自己的球飞行的方向，再加上期望方向任一边的合理距离。
Definition: line of play the "line of play" is the direction which the player wishes his ball to take after a stroke, plus a reasonable distance on either side of the intended direction.
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