In a translation of the second Harry Potter book:
"All Harry's spellbooks, wand, cauldron and top-of-the-range Nimbus 2000 broomstick had been locked in a cupboard under the stairs by Uncle Vernon the instant Harry had come home."
It seems like this translation is well accepted: http://zh.harrypotter.wikia.com/wiki/%E5%85%89%E8%BD%AE2000?variant=zh
Google Translate's answer of 'light wheel' is unhelpful.
Is "光轮" just a transliteration or does it have extra meaning?