He has difficulty in sleeping,inability to concentrate.
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Hehasdifficultyinsleeping,inabilitytoconcentrate.Hehasdifficultyinsleeping,inabilitytoconcentrate.He
He has difficulty in sleeping,inability to concentrate.
He has difficulty in sleeping,inability to concentrate.
He has difficulty in sleeping,inability to concentrate.
他睡眠不好,注意力很难集中
他不易入睡，无法集中。