After a violation, is it illegal for the thrower-in to move in both directions along the boundary line before releasing the ball?

违例后的掷球入界，在球离手前，掷球入界队员延边线向不同的两个方向移动是违犯规则的？

youdao

After a violation, is it illegal for the thrower-in to move in both directions along the boundary line before releasing the ball?

违例后的掷球入界，在球离手前，掷球入界队员延边线向不同的两个方向移动是违犯规则的？

youdao