Equivalence, a central and controversial issue in translation, has been studied, discussed and disputed by many scholars. For this reason, they employed various approaches and have yielded fruitful and remarkable theories. Three representative equivalence theories are selected in the thesis to elaborate equivalence: Nida's reader-response based dynamic equivalence, Catford's textual equivalence, Qiu Maoru's empirical formula on equivalence. Equivalence is an applicable tool to analyze and evaluate translation.
