promise

The post office has promised to resume first class mail delivery to the area on Friday.

邮局已承诺在星期五恢复该地区第一类邮件的递送。

He had promised that the rich and privileged would no longer get preferential treatment.

他已承诺富人和特权阶层将不会再得到优待。

Promise me you will not waste your time.

向我承诺你不会浪费你的时间。

I'll call you back, I promise.

我会给你回电话的，我保证。

If you make a promise, you should keep it.

如果你许下一个诺言，你就应该遵守它。