英文习语 out of the woods 的意义与用法？

英文习语 out of the woods 在实际应用中的含义为 “脱离险境，摆脱困境，走出阴霾，拨云见日”，例如下列情况：

The patient that remains in the ICU for the time being is not out of the woods yet despite having received a very successful surgery.

尽管患者接受的手术十分成功，然而目前仍处在重症监护室中，尚未脱离危险。

The global economy won't be out of the woods as long as the crisis in Europe remains what it is.

只要欧洲危机持续下去，那么全球经济就无法摆脱困境。