rationaleKK [ˏræʃəˋnæl] /ˌɹæʃəˈnæl/发音名词1理由、依据、理据The manager explained the rationale behind the sudden staff changes.经理说明了这次人事异动背后的理由。2基本原理、原理正式The textbook outlines the rationale of the whole vaccination program.这本教科书说明了整套疫苗接种计划的基本原理。用这个字练口说→