hái zi / shū bāo / shàng / de / mó guǐ zhān / huài / le / xū yào / huàn / yī gè / xīn / de孩子书包上的魔鬼粘坏了,需要换一个新的。The Velcro on the child's schoolbag is broken and needs to be replaced with a new one.