深入 1.(达到事物的内部) go deep into; penetrate into 深入敌后 penetrate far behind enemy lines; 深入改革 deepen [intensify] the reform; further(ing) the reform; in-depth reform; 深入国境线 deep behind the frontier; 深入基层 go down to the grass-roots units; 深入实际 go deep into the realities of life; 深入地总结 sum up in a penetrating way; 深入体制改革 deepen the structural reform; 深入下层 go into the midst of the lower levels; 深入事物本质 probe; deeply into the essence of things2.(深刻) thorough; deepgoing 深入地分析 analyse in depth; 深入研究 study in a deepgoing way; 进行深入的调查研究 make a deep [thorough] investigation and study