To apply oneself wholeheartedly and diligently; to concentrate one's attention with full dedication.
他用心用意地研究着这个复杂的数学问题，希望能找到突破口。
He was diligently and intently studying the complex mathematical problem, hoping to find a breakthrough.
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To apply oneself wholeheartedly and diligently; to concentrate one's attention with full dedication.