礼仪是一门综合性较强的行为科学，是指在人际交往中，自始至终地以一定的、约定俗成的程序、方式来表现的律己、敬人的完整行为。

• Etiquette, as a fundamental behavioral science, refers to the consistent, customary procedures and formulas of the conduct that is completely reflected by self-restraint and respect for others within social interaction.