白垩粉，白粉一种碾碎的并洗过的纯净白垩，用于油漆、墨水和油灰 A pure white grade of chalk that has been ground and washed for use in paints, ink, and putty.
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 A small cube of chalk used in rubbing the tip of a billiard or pool cue to increase its friction with the cue ball.
多佛尔与法国加莱市隔岸相对的英格兰东南部自治市，临多佛尔海峡。罗马灯塔遗址，自中世纪以来就是战略要地，该市白垩崖多岩洞和涵洞原为走私者所用。人口33，700 A municipal borough of southeast England on the Strait of Dover opposite Calais, France. Site of a Roman lighthouse, it has been a strategic port since medieval times. The chalk cliffs rising above the city have caves and tunnels originally used by smugglers. Population, 33,700.