"The elephant has some halves."
Translation:Elefantul are câteva jumătăți.
It's ok if you mean some specific halves. Otherwise, stick to "niște" if it's a general statement, or "câteva" as a more formal variant. However, you can also use "câteva" if you want to emphasize that the quantity is small. I know, Romanian can be extremely tough with these small nuances, but any Romanian will understand you even if you don't use the right nuances :D
Try to create a new way to learn Romanian if you feel so smart. Everybody understand that some phrases are just build to teach some part of the language. You cannot propose sentenses, "long like your arm"(french expression, (quite sure that it does not exist in English)) (sau "lungi ca zile de post" in limba română) to explain a plural or a piece of gramatic! .... If you're full of good ideas you just can propose yourself to participate to this beautiful enterprise which propose you to learn new languages free. Participation is also free of charge and without payment!