那老人大部分的时间头脑不清醒，但也有神志清明的时候。
The old man is confused most of the time but he does have lucid moments.
1851年，托尔斯泰来到高加索，群山环抱的清明环境使他纷乱的大脑清醒过来。
In 1851, Tolstoy came, and the mountains around the Caucasian tomb-sweeping environment tumultuous brain awake.
1851年，托尔斯泰来到高加索，群山环抱的清明环境使他纷乱的大脑清醒过来。
In 1851, Tolstoy came, and the mountains around the Caucasian tomb-sweeping environment tumultuous brain awake.
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