give preliminary rulings, at the request of courts or tribunals of the Member States, on the interpretation of Union law or the validity of acts adopted by the institutions;
réamhrialuithe a thabhairt, arna n-iarraidh sin do chúirteanna nó binsí de chuid na mBallstát, maidir le léiriú dhlí an Aontais nó le bailíocht gníomhartha arna nglacadh ag na hinstitiúidí;