Building on the polysystem theory of Descriptive Translation Studies, Andre Lefevere, an American translation theorist, proposed his triad theory of ideology, poetics and patronage as the controlling factors in translation.

• 美国翻译理论家勒菲弗尔在多元系统理论的基础上,提出了影响翻译的三因素说:意识形态、诗学和赞助人,为翻译研究提供了新的研究范式,具有很强的解释力。