1N-UNCOUNT 深奥;深刻Profundity is great intellectual depth and understanding. 深奥;深刻
The profundity of this book is achieved with breathtaking lightness. [+ of]
这本书极为深入浅出。
2N-UNCOUNT (情感、经历、变化等的)深厚,深刻,深切 If you refer to the profundity of a feeling, experience, or change, you mean that it is deep, powerful, or serious. (情感、经历、变化等的)深厚,深刻,深切
...the profundity of the structural problems besetting the country. [+ of]