短语
中文翻译：为某事而困惑
同义词：
['wrestle with', 'puzzle over', 'contemplate']
例句：
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1. He scratched his headover the problem for hours before finally decidingto ask for help.
他为这个问题困惑了几个小时，最后决定去寻求帮助。
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2. TheCEO was scratching his head over howto improve the company's bottom line.
首席执行官正在为如何提高公司的利润而感到困惑。
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3. She scratched her head over thefact that she had forgotten her keys athome.
她对忘记带钥匙的事实感到困惑。