“渊博的”的英语？

这位作家渊博的学问来自长年累月的钻研.The profound erudition of the writer came from long years of study.他是一位学识渊博的人.He is a very learned man.我们与她在一起很自在，而她渊博的知识令我们叹服。We felt at home with her and were impressed with the depth of her knowledg...