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 ...
I worked stocking shelves in a grocery store.我在一家杂货店工作，负责为货架上货。He was employed at the local grocery store as a delivery boy.他受雇于当地杂货店当送货员.It is difficult for a small grocery store to compete with a supermarket.小商店很难与超市抗争...