Lettera莱泰拉lettern.信；字母v.写下；印刷n.租赁人letter of instruction信用函通知书,指示证letter printing plate活版印刷letters of credential[法] 国书letter of explanation说明书letters of invitation邀请信letter of transmittal转送函letter form keratitis文字状角膜炎letter of abandonment委付书Letters on Literaturen.《论文学的信》；安德鲁·朗格(Andrew Lang)著letter of undertaking担保书