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灰，防止灰损肥。　　《算算看》　　老杜和老顾，齐走富裕路。老杜养了兔，老顾养了鹿。老顾给老杜十只兔，两家平等同只数;老顾给老杜十只鹿，顾家是杜家一半数。请问老杜...

d peppers, where's the peck of pickled peppers peter piper picked?　　彼德派柏捏起一撮...