记忆方法:【词根】com共同+mod方式,模式+ity具备某种性质,状况→有共同模式的东西→商品→commodity
Crude oil is the world's most important commodity. 原油是世界上最重要的商品。The group became a sales juggernaut in the commodity options business. 这个集团成为了商品期权交易市场的销售巨头。
Clean water is a precious commodity in that part of the world. 在世界的那个地方，洁净的水是宝贵的东西。Water is a precious commodity that is often taken for granted in the West. 水很宝贵，但在西方人们往往意识不到这一点。
Fresh water and other commodities are in short supply. 淡水和其他商品短缺。The government increased prices on several basic commodities like bread and meat. 政府提高了面包、肉类等几种基本商品的价格。Money was a commodity she never thought about except in the abstract. 钱对她来说就是个抽象的东西，她从不去想钱。
Optimism about the US economy has been a rare commodity lately. 近来很少有人对美国经济持乐观态度。Can it be moral to make so much money out of a commodity which is essential to life? 靠着一种生活必需品赚这么多钱，这在道德上说得过去吗？