他陷入了深深的沉思。
He fell into deep contemplation.
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Example sentences
他坐在窗邊，陷入了沉思。
他坐在窗边，陷入了沉思。
He sat by the window, lost in deep thought.
他俯首看著地上的信件，陷入了沉思。
He bowed his head looking at the letter on the ground and fell into deep thought.
Usage Notes
Refers to thinking deeply or seriously about something.
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