en_tn/dan/01/04.md

without blemish

These two negative words together emphasize a positive idea. Alternate translation: "with perfect appearance" (See: rc://en/ta/man/translate/figs-litotes)

filled with knowledge and understanding

This is an idiom. This means they knew much and could organize and use that information. (See: rc://en/ta/man/translate/figs-idiom)

king's palace

This is the large house or building where the king lives.

He was to teach them

"Ashpenaz was to teach them"