recommendation(n.)
15世纪早期, recommendacion,“向他人推荐自己”的行为(现已过时),源自古法语 recommendation(现代法语 recommandation),来自中世纪拉丁语 recommendationem(主格 recommendatio),是 recommendare 的动作名词形式(参见 recommend)。意思是“以有利的方式代表,推荐(某人或某物)值得考虑”,始于1570年代。Letter of recommendation 始于约1500年。
Letter of recommendation, a letter given by one person to another, and addressed to a third or "to whom it may concern," in which the bearer is represented as worthy of consideration and confidence. [Century Dictionary, 1895]
推荐信,一封由一人给另一人的信,寄给第三方或“有关人士”,在信中,持有人被代表为值得信任和考虑。[世纪词典,1895]
该词起源时间:15世纪初