Just then, Bart returned, wobbling on his skates.就在这时，巴特摇摇晃晃地滑着轮滑回来了。a pair of roller skates一双旱冰鞋Take your skates in case you decide to go skating.把溜冰鞋带去,说不定你们要溜冰呢....
锋利的刀刃可能会划伤皮肤，导致出血。A sharp blade is likely to nick the skin and draw blood.用一把非常锋利的刀将褐色的皮从肉上剥去。Pare the brown skin from the meat with a very sharp knife.地上铺满了棱角锋利的石子。The ground was strewn with sharp-edged pebbles....