price: designates what is asked for, especially for goods and commodities: the ~ of vegetables has risen sharply. （goods和commodity的区别，goods是商品物品多指成品things that are produced to be sold，如cheap/expensive goods便宜的/昂贵的商品或物品，commodity是货物货品，多指原材料或初级农产品，如铜和咖啡raw material or primary agricultural product, such as copper or coffee，如iron ore was a valuable commodity忒矿石是有价值的货品）
charge: is close to price but applies especially to services: what is the ~ for hauling away a load of brush; and can apply additionally to what is imposed on one as a financial burden: ~d them $3.00 each.
cost: applies to what is given or surrendered for something, often specifically the payment of price asked: the ~ of a new car. 这里give, surrender, pay意思都是支付，只将pay标红 成本cost和产出production相对，如maximum production at lowest cost最低成本最大产出，二者之差为利润profit。单位成本利润高叫做cost-effective成本效益高
expense: often designates the aggregate amount actually disbursed for something: our ~s were higher last month. (disburse（从资金中）支付支出，数量较大to pay money from a large amount/fund，如the disbursement of funds拨款，如the aid will not be disbursed until next year援助款到明年才会下拨) aggregate总计合计
price商品价格: 多指商品货物价格，charge服务价格: 指服务价格，还作动词表示收费，cost成本: 被支付的价格称为成本，expense总成本: 通常指总计成本
记忆方法: 1）首字母PCCE容易出错("peccable出错"的前4个字母-->紧盯成本价格)<==价格
2）价格的意思是为交换某物所给出的mean what is given or asked in exchange for something.
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