数组,哈希嵌套 数组,哈希的引用 1.哈希的嵌套和引用 %hash = ( 'group1', {'fruit', 'banana', 'drink', 'orange juice', 'vegetable', 'cauliflower'}, 'group2', {'fruit', 'apple', 'drink', 'apple juice', 'vegetable', 'lettuce'}, 'group3', {'fruit', 'orange', 'drink', 'red tea',…