go back on

• • 食言，毁约，违约：

    He said he would loan money to us, and then went back on his promise.

    他说他会借钱给我们，后来他食言了。

  • 出卖；背叛：

    Some of his friends have gone back on him.

    他有几个朋友对他不忠。

  • 使失望；失去作用：

    Grandfather's eyes are going back on him.

    祖父的视力在减退。

  • [美国口语]
  • 对…不忠实，背叛
  • 食言，不遵守，不履行