寄: send; post; mail一封信: a letter寄一封航空信: send a letter by airmail打一封信: type a letter回复一封信: respond to a letter接到一封信: receive a letter每天一封信: everyday in a letter收到一封信: have a letter撕毁一封信: to tear uthe letter写一封信: write a letter一封信件: letter最后一封信: last letter给玛丽一封信: a letter from jane marry我在写一封信: i am writing a letter在同一封信中: under the same cover这里有一封信: there was this letter给爸爸的一封信: gei ba ba de xin; my father is a hero给杰克的一封信: to jack给校长的一封信: a letter to the headmaster给约翰的一封信: a darl gohe letter; a dear john letter他给她寄了一封信: he told me a story but i had heard that many times投寄论文的一封信: a paper submission letter我今天收到一封信: i had a letter this morning我写了一封信给你。: i wrote a letter to you写一封信,开始一组: write a letter, start a group