a brush of the hand的用法和样例：
- Flatten the dough with a press of the hand.
- Interruptions were swept aside with a wave of the hand.
- He saluted his friend by a wave of the hand.
- He gave a wave of the hand to say goodbye.
- Flatten the doughwith a press of the hand.
- A karate chop, ie a blow with the side of the hand.