She was trapped in a downward spiral of personal unhappiness.

她陷入了个人不幸的旋涡难以自拔。

The result is a downward spiral.

这将造成一个下行螺旋的结果。

A downward spiral had began.

向下螺旋坠落便开始了。

We need to stop this downward spiral.

我们需要遏制住这种螺旋下滑的势头。

We mustn't get trapped in a downward spiral.

我们决不能陷入下降式螺旋之中。