beluga的复数形式怎么拼写？

It's beluga, the best caviar in the world.这是白海豚, 全世界最好的鱼子酱.A beluga whale swims in a tank at the Vancouver Aquarium.一头白色大鳇鱼或叫大白鲸在北美洲的范库弗峰水族馆里游弋着.Sushi may not be traditional Christmas fare, but this Beluga seems kee...

beluga的音标：beluga的英式发音音标为：[bə'lu:gə]beluga的美式发音音标为：[bə'luɡə]...

n.鲟，鲟子酱，白鲸...