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Deep in thought
deep in thought /θɔ:t/
沉思，深思
This phrase means that someone thinks deeply and seriously about something in silence and loneliness.
这个短语指的是，在寂静和孤独时某人对某事认真深入地思考和深沉思索。
Don't bother him! He looks deep in thought.
别打扰他了，他看起来在想事情。
She walked along the street, deep in thought.
她沿着街道走着，陷入了沉思。