加号用于加法;减号用于减法.The plus sign is used in addition and the minus is used in subtraction.一元减号得到的运算对象的负值.The unary minus produces the negative of the value.如果该整数是负值, 那么将使用减号作为前缀.If the integer is negative, the representation ...
有多少白人家庭生活于赤贫之中?How many white families have lived in stark poverty?自有人类生存以来,大多数人生活于贫困之中, 饱受饥饿之虞.For all existence most men have lived in poverty, threatened by hunger.在一块丰饶的土地上, 家家都不容生活于绝望的贫困中.In a land of great wealth, ...