美国: the United States of America ...由: cause; reason同一: same; identical邮局: post office收: put away; take in递: hand over; pass; give的: 4次方是 The fourth power of 2 i ...信件: letter; mail; missive邮局收据: postal receipt无法投递的信: dead letter传阅的信件: a circular letter待覆的信件: arrears of correspondence ie letters waiting to be answered发出的信件: outgoing letter来往的信件: correspondence内送的信件: incoming外送的信件: outgoing interface友好的信件: a friendly letter参阅你的信件: with reference to your letter参阅我的信件: reference to my letter〔美国〕邮局运员。: postal clerk美国邮局: u.s. postal service奥修给朋友的信件: osho writes many letters to friends关于你投诉的信件: a letter concerning your complaint寄往国外的信件: letters for abroad推销商品的信件: call letter