People were booing and throwing things at them.

人们发出嘘声，并朝他们扔东西。

The fans are entitled to their opinion but booing doesn't help anyone.

狂热爱好者们有权表达自己的看法，但发出嘘声对任何人都没有好处。

The news was greeted by booing.

那消息受到一阵嘘声。

I don't know what they were booing.

我不知道他们有什么好嘘的。

"Barrack" could mean booing somebody in English.

Barrack “在英语中有喝倒彩的意思。”