noun需要,必要;需要的东西,必需品;(食物、钱或生活来源的)短缺,缺乏
verb需要(某物);必须(做某事)
nouna situation in which you must have something or do something
nounthe things that you must have in life or in a particular situation
nounthe state of not having enough food, money or support
verbIf you need something, you must have it
verbIf you need to do something, you must do it