He made a mistake, but then he corrected the situation before it got worse.
他犯了错误，但是在局面变坏之前他已经改正了。
He made a mistake, but then he corrected the situation before it got worse.
他犯了一个错误，但是在情况变得更糟糕之前他纠正了这种情况。
He made a mistake, but then he corrected the situation before it got worse.
他犯了一个错误，但是在情况变得更糟糕之前他纠正了这种情况。
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