go back on片语动词KK [go bæk ɑn] /ɡoʊ bæk ɑn/发音片语动词1违背、背弃、不守He went back on his promise to pay for the repairs.他违背了自己付修理费的承诺。2推翻、反悔The board went back on its earlier decision to close the factory.董事会推翻了先前关闭工厂的决定。用这个字练口说→