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手术后，他的健康状况突然好转。

His health ___took ___a ___turn ___for ___the ___better after the surgery.

我们必须现在采取行动，防止经济突然恶化。

We must act now to prevent the economy from ___taking ___a ___turn ___for ___the ___worse.

冲突升级后，该地区的政治局势突然恶化。

The political situation in the region ___took ___a ___turn ___for ___the ___worse after the conflict escalated.