帮忙解释这篇英语短文..有赏有助于回答者给出准确的答案very town in the United States ha
帮忙解释这篇英语短文..有赏 有助于回答者给出准确的答案 very town in the United States has a post office .Some are very small ,and you may also find them in the corner of a shop .Others are larger buildings .They are open five days a week and on Saturday mornings .From Monday through Friday they are usually open from 8:30 to 4:30 .If you know how much the postage (邮资) is for your letter ,you can buy stamps at any window.In some post offices you can buy stamps from machines .Stamps are sold many different prices ,from one cent (美分) to many dollars .If you are not sure how much postage is for you letter ,you may ask the man or the woman in the post office for help .he or she will give you the stamps you need .If you are sending your letter far away ,you should use airmail envelopes (航空信封) .Remember that postage will be more expensive for a letter to be sent outside the country.