If they touch it twice, it is a double; if they touch it with the palm of their hand and lift it up, it is a lift
If the player hits the ball, and the ball is blocked, that player may hit the ball again. Similarly, if the player blocks a ball, but it lands on the player's side of the court, that same player may touch the ball again.
I'm pretty sure it is when the ball touches two parts of a player's body in succession, or when a player touches the ball twice in a row.
If both players actually touch the ball, then yes, normally you are allowed to touch it again immediately after. However, if the other person's arms are under you and don't actually contact the ball with you, you may not touch it again immediately afterwards.
A double hit in volleyball is when the same player contacts the ball twice without another player touching the ball.
never and when the ref doesn't see you hit it twice.
there are no paddles in volleyball
no a player can only hit the ball once
When one player hits the ball twice in a row, which is a illegal move.