原文地址

save the day

to produce a good result when a bad result was expected

在预计情况不乐观的情况下出现了好结果;反败为胜，转危为安，化险为夷

The team was expected to lose, but Sally made three points and saved the day.

这个队本来是要输的，可是萨莉得了三分，使局面转败为胜。

If your solution works, you might be able to save the day.

如果您的解决方案是有效的，可能能够化险为夷。

If they get the better hand of us, Tony would save the day.

如果他们居优势的话，东尼会使我们转败为胜的。