In the Kingdom Interlinear (I have the hardback version but you can download it in the JW App) you can see the literal English translation and you will see that Jehovah's name is not mentioned in many instances... and that's in one of their own publications. Most JWs won't even pick that up though.
Ephesians 6:4 KI:
And the fathers, not be YOU provoking to wrath the children of YOU, but be YOU nourishing out them in discipline and putting mind in of Lord. (Κυρίου)