Having been ill for a long time he needed time to recover.
由于病了很长时间，他需要一段恢复的时间。
Having been ill for a long time, he needed time to recover.
由于他病了很长时间，他需要一段恢复的时间。
Having been ill for a long time, he needed time to recover.
由于病了很长时间，他需要一段恢复的时间。
Having been ill for a long time, he needed time to recover.
由于病了很长时间，他需要一段恢复的时间。
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