He immersed himself totally in his work.
他埋头于工作中。
He immersed himself totally in his work.
他埋头于工作中。
He immersed himself in work so as to stop thinking about her.
他埋头于工作以便不再思念她。
He was steeped in modern history.
他埋头于近代史的研
。
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，
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