1 sentence

1. 他还是个乳臭未干的小伙子，哪懂这些事？

   tā hái​shi gè rǔ​xiù​wèi​gān de xiǎo​huǒ​zi, nǎ dǒng zhè​xiē shì?

   He's just a wet-behind-the-ears kid; what does he know about these things?

   Source: Dong Chinese Dictionary