"They eat and they drink."
Translation:Ei mănâncă și ei beau.
It could work here if you want to put emphasis on the different actions (eat vs drink).
We would surely say Ei mănâncă iar ei beau (but note that it's essential for this to make sense that the former ei are others from the later ei), but we would never say Ei mănâncă iar ei mănâncă.
what about Listen-option at https://translate.google.com/?hl=en#view=home&op=translate&sl=ro&tl=en&text=beau