go back on 改变主意，转念 go back on a promise不遵守诺言，打破承诺 go easy on vtr informal (use sparingly) 非正式用语 节约使用…，有节制地使用…
2
?食言
... get down go back to grass roots 追根究底 go back on a promise食言 go back 回去 ...
双语例句
1
You can't gobackon your words once you make apromise on something!
我们不能相信他，他这人总是说话不算数！
2
Cultivation of the charm of a woman is the woman, her punctuality, compliance with the promise, even if never to gobackon the difficulties encountered;