A small cube of chalk used in rubbingthe tip of a billiard or pool cue to increase its friction with the cue ball.

 
  • 擦抹于球杆顶端的粉块用来擦弹子球棒梢或落袋台球棒梢以增加其与球的摩擦的一小方块白垩。
今日热词
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