30 sailfish have surrounded a ball of sardines.三十條旗魚包圍了一群沙丁魚

a ball of:一團(tuán)

The car was engulfed in a ball of flames.

汽車陷于一團(tuán)火球中。

People consider me a ball of energy!

人們認(rèn)為我是能量球!

To catch their prey requires more than speed alone.要捕捉獵物不光要速度快而已

more than:不只是；很；超過

We know more than you do.

我們比你知道的多。

He needs me more than ever.

他比任何時(shí)候更需要我。

Knocking it off balance, separates it from the shoal.讓獵物失去平衡和魚群分開

knock off:<非正>降低；<非正>將…擊打掉

He has knocked 10 seconds off the world record...

他將世界紀(jì)錄縮短了10秒。

My health compels me to knock off work.

我的健康狀況迫使我不得不停止工作。

separate from:從...分開

Violent prisoners are kept separate from the others.

有暴力行為的囚犯隔離囚禁。

Korea is separated from China by the Yalu River.

朝鮮和中國只有鴨綠江一水之隔。