thrust wall的用法和样例：
例句
- Place the piano with its back against the wall.
把钢琴的后背靠墙放。 - Ventress watched, perversely fascinated, the play of muscles on his back and taut ass, as he thrust and arched, trying vainly to increase the friction.
文崔斯极度着迷地看着他展示后背和屁股上的紧凑肌肉，不断地擦过去又弓起身来，徒劳地试图增大摩擦力。
