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星期天,小兔、小鹿、小狗都来到小兔家玩积木。小兔白白找来21块长方形积木,每块长14厘米、宽6厘米。白白想用这些积木
Sunday, bunnies, fawn, puppies have come to Bunny play building blocks. Rabbit vainly found 21 rectangular blocks, each 14 cm long and 6 cm wide. White want to use these building blocks