暗帝的眷宠千草txt下载:请高手翻译个句子,非常感谢

The distinction between “needs”and “wants” help us understand why it is impossible to objectively define poverty ,most people would agree that an absence of poverty means that some basic level of needs has been met. But they would disagree on what constitutes needs versus wants. In the 1920s,less than half of all households in the united states has electricity ,and even fewer had a telephone or an automobile. still ,people survived and prospered. Would you consider electricity a need or a want? How about gasoline? How about other television ,a computer, and a 100 pair of tennis shoes-are they really need? Although food and water are necessary for human survival, no item (such as pizza,steak, a big MAC,or a 1bottle of spring water) is essential.我没看懂的句子是 "But they would disagree on what constitutes needs versus wants.",另外请问want 和 need的区别？