Definition: a long way into something from the top or outside Level: B1
他们深入森林。
They travelled ___deep into the forest.
他把手深深地插进口袋。
He thrust his hands ___deep into his pockets.
我只是深深陷入故事中，陷入作者自己的世界。
I just fall ___deep into the story, into the writer's own world.
