We saw a school of fish in the river.

我们看到河中有一群鱼。

Fredric Manach said this method uses two-kilometer-long nets that surround whole schools of fish.

弗雷德里克·马纳赫说，这种方法使用两公里长的网来包围整个鱼群。

When Wade and Ember explored an old subway car, her glow startled a school of fish.

阿波和小焰正探索着一节旧地铁车厢，她耀眼的光芒惊动了一群鱼儿。

Large schools of fish recently appeared off New York's Long Island.

纽约长岛最近出现了大群鱼。

" A school of fish" , so I'm going to tie this to movies again.

“一群鱼”，所以我又要把它和电影联系起来。

Radar, sonar, helicopters, and spotter planes are all used to guide factory ships towards dwindling schools of fish.

雷达、声纳、直升机和侦察机都被用来引导工厂船只驶向日益减少的鱼群。

Then the school of fish makes lots of twists and turns. All that movement makes it hard for predators to see individuals in a large group.

然后鱼群会做出很多辗转迂回的动作，这使捕食者很难从一大群鱼中发现落单的个体。

Before the Hanshin earthquake in Japan, there were reports of large schools of fish swimming near the surface of the water.

日本的阪神地震发生之前，有报告说大批鱼群游到了水面。

The sharks were there because the fish were there. The same waves that had washed the sand reef away had somehow pushed large schools of fish into the area.

鲨鱼在那里，是因为那里有鱼。同样的海浪把沙礁冲走了，不知何故把大量的鱼推到了这片区域。

By day, Luca is an underwater shepherd who uses his crook to herd a school of fish grazing on a patch of seagrass.

白天，卢卡是一名水下牧羊人， 他用他的拐杖放牧一群在海草上吃草的鱼。

But if you reduce a school of fish to individuals, it loses the ability to evade predators, and there's nothing left to study.

但是如果你把鱼群简化为个体，它就失去了躲避捕食者的能力，就没有什么可以研究的了。

Schools of fish exhibit complex swarming behaviors that help them evade hungry predators, while a lone fish is quickly singled out as easy prey.

鱼群表现出复杂的集群行为，帮助它们躲避饥饿的捕食者，而一条孤独的鱼很快就会被挑出来作为容易捕食的猎物。

If you have seen Finding Nemo, any time you see that big group of fish travelling together, that is called " a school of fish" .

如果你看过海底总动员，任何时候你都会看到一大群鱼一起旅行， 那就是“一群鱼” 。

He watched the sharks kill. They swam after the schools of fish played with them and killed them even though they were not hungry. They would not let the fish swim out into the open sea.

他看着鲨鱼在捕杀，它们追在成群的鱼群后面，与它们嬉戏，即使不饿也会把它们杀死。它们不会让鱼游到开阔的海域中。

And there, in the depths of the canyon, was a sight that took Liao Yuan's breath away: schools of fish so numerous and diverse that they seemed to form an underwater rainbow.

而在峡谷深处，则是让廖远倒吸一口凉气的景象：鱼群繁多，种类繁多，仿佛形成了一条水下彩虹。

When you see the  writhing sequined mass of a bait ball, meaning a school of fish that swims  tightly in a globe, you know they will be picked off by whatever larger thing  has caused them to swim so close together.

当你看到一团扭动着亮片的诱饵球时，这意味着一群鱼在一个球体中紧密地游动，你就知道它们会被任何更大的东西导致它们游得如此之近而被捕获。