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1·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。《牛津词典》

2·This can lead us on a downward spiral with more and more plants and animals becoming endangered as well.

这可能导致我们进入一个恶性循环，即越来越多的植物和动物也濒临灭绝。

3·The result is a downward spiral.

这将造成一个下行螺旋的结果。

4·A downward spiral had began.

向下螺旋坠落便开始了。

5·We need to stop this downward spiral.

我们需要遏制住这种螺旋下滑的势头。

6·We mustn't get trapped in a downward spiral.

我们决不能陷入下降式螺旋之中。

7·Without change, this downward spiral will be irreparable.

如果不改变，这种恶性循环将无法弥补。

8·The downward spiral must be interrupted by obtaining help.

我们应该通过获取帮助来中断这种恶性循环。

9·Even in the face of this downward spiral, the despairing have hoped.

尽管面临着这样的下降趋势，但是绝望中依然带有一线生机。

10·That would only add to a downward spiral of confidence and spending.

这只会造成信心和消费的持续下降。