letter；英式读音：['letə(r)]；美式读音：['lɛtɚ]；中文谐音：莱特儿；n.信; 证书，许可证; 字母，文字; 字面意义;；vt.用字母标明; 写字母于; 加标题;；vi.写印刷体字母;；[例句]I had received a letter from a very close friend.；我收到一个很要好的朋友的来信。；[其他]第三人称单数：letters 复数：letters 现在分词：lettering过去式：lettered 过去分词：lettered