渊深

tā zài zhè fāng miàn de xué wen tè bié yuān shēn

他在这方面的学问特别渊深。

His knowledge about the subject is very profound.

zhī shi yuān shēn

知识渊深

be erudite

jì móu yuān shēn

计谋渊深

have a profound plan

wǒ men cóng lái méi tà jìn guo guǎng mào yuān shēn de yǔ zhòu

我们从来没踏进过广袤渊深的宇宙。

We had never stepped into such a cavernous space.