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。

《柯林斯英汉双解大词典》

If you make a promise you should keep it; you ought not to break a promise.

你如果作出允诺，就得守诺言，不应该违背诺言。

youdao

There is no trivial solution to this problem, and you should keep it in mind when designing your overall architecture and workflow.

对于该问题，没有简单的解决方案，因此在设计整体架构和工作流时应特别注意这一点。

youdao

"I think that growing up Asian, and as a woman, you're totally raised with this notion that you should keep it all inside and not have a lot of self-expression, " she said.

CNN: Losing weight, saying 'yes' in 2009

As one African delegate explained it to me: "if you make a legally-binding promise, you should keep to it".

BBC: Canada wins few friends on climate

Should you sell it or keep it?

FORBES: Sell Or Hold (Given Year-End Tax Rates)?