当他用ooga声模仿原始人时，全班都笑翻了。

The whole class burst into laughter when he made an ___ooga sound imitating a caveman.

那辆改装车的喇叭发出响亮的'呜呜'声，吸引了所有人的注意。

The modified car's horn gave a loud ___ooga that caught everyone's attention.