摩擦的的用法和樣例：
例句
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擦抹于球桿頂端的粉塊用來(lái)擦彈子球棒梢或落袋臺球棒梢以增加其與球的摩擦的一小方塊白堊
A small cube of chalk used in rubbing the tip of a billiard or pool cue to increase its friction with the cue ball. -
從你的日常經(jīng)驗和對簡(jiǎn)單機器的研究中，你就會(huì )了解一點(diǎn)兒有關(guān)摩擦的知識。
From your daily experience and from your study of simple machines, you probably know a bit about friction.
