Feelings of confusion and difficulty concentrating.

迷惑感以及精力难以集中。

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About three-fourths of Iraqis report feelings of anger, depression and difficulty concentrating.

约三分之四的伊拉克人感到愤怒、低落、难以集中注意力。

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Once a class star, young Ms. Wu began having difficulty concentrating on her homework, and her test scores kept falling.

小吴曾是一个班级明星，但开始难以集中精神写作业，考试成绩每况愈下。

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In the latest survey, 42 percent reported depression, 21 percent difficulty concentrating and 18 percent trouble sleeping.

CNN: Survey: Shock from terror attacks receding

The symptoms of the illness include a numbing of emotions, difficulty concentrating and exaggerated startled responses to events.

MSN: Panel calls for annual PTSD screening

People with frontal lobe damage caused by accidents often find difficulty concentrating and are more easily distracted, research shows.

BBC: Ecstasy tablets