expend [] v. 消费,花费
expense [] n.花费,消费;费用
expensive [] a.昂贵的,花钱多的
expenditure [] n.(时间等)支出,消费
dispensable [] a.可分配的;不重要的
indispensable [] a.必不可少的,必需的
pension [] n. 养老金,年金
pendulum [] n.(钟等
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