The sea lamprey is an ancient jawless fish.

七是一种没有颚的古老鱼类。

In Lake Huron behind us, there are anywhere from 80 to 150,000 parasitic sea lampreys swimming around right now.

们身后的休伦湖，有80万到15万只寄生海七正游弋。

Spain and Portugal, you could find sea lamprey on a menu as the high dollar market price item.

西班牙和葡萄牙，你以菜单上找到七以很高的市场价格出售。

Now interestingly, sea lamprey are considered a delicacy in other parts of the world.

有趣的是，七世界其他地方被认为是美味佳肴。

The sea lamprey actually swam or hitched a ride into the Great Lakes through the canal system.

七实际上是通过运河系统游泳或搭便车进入五大湖的。

' and, 'Who died of a surfeit of lampreys?

’还有，‘谁死于过多的七？

Sea lamprey can tell the difference between warm and cold blooded organisms.

七能分辨出冷血和温血生物的。

So, McCoy and her colleagues concluded that Tullimonstrum was probably an ancient relative of lampreys.

因此，McCoy 和她的同事得出结论，Tullimonstrum 能是七的远亲。

Probably the sea lamprey is one of if not the most devastating species to have invaded the Great Lakes.

七能是入侵五大湖的最具破坏性的物种之一。

People in the Great Lakes region simply didn't have the palate for sea lamprey.

五大湖地区的人们根本不喜欢七。

Most sea lamprey would swim very quickly away if they came near a human.

如果接近人类，大多数七会游得很快。

We are warm-blooded and the fish that sea lamprey feed on are cold blooded.

们是温血的，海吃的鱼是冷血的。

Several of these classes are specific types of fish, for example: jawless fish, like lampreys and hagfish, and cartilaginous fish, like sharks and rays.

这些纲类的一些便是鱼类，比如：无颚纲鱼形动物，像七、盲和软骨纲鱼，像鲨鱼和魔鬼鱼。

And other fossils of vertebrates found from the same period, like fossils of lampreys, didn't have those white lines at all.

同一时期发现的其他脊椎动物化石，如七化石， 根本没有那些白线。

In the midst of the watery mass, brightly lit by our electric beams, there snaked past those one-meter lampreys that are common to nearly every clime.

这海水和这海风给他带来了纵然不是过多的悔恨，也一定是过多的回忆。

Like modern lampreys and hagfish, conodonts were jawless fish, and they were one of the earliest and most successful groups of vertebrates.

像现代的七和盲一样， 牙形刺是无颌鱼，它们是最早和最成功的脊椎动物群之一。

All of these traits are shared by Tully monsters and one other known animal: lampreys – long fish with toothy, jawless mouths.

所有这些特征都为塔利怪兽和另一种已知动物所共有：七——一种长着长着牙齿、没有下巴的嘴巴的鱼。

The sea lamprey are called the vampire of the Great Lakes because they attach and drink the blood of our native fish species here.

七被称为五大湖的吸血鬼，因为它们附着五大湖上，吸食五大湖本地鱼类的血液。

After analyzing more than 1,200 fossils of the Tully Monster they determined that the creature was a vertebrate, probably an ancestor of Jawless fish like lampreys.

分析了 1,200 多块塔利怪兽的化石后， 他们确定该生物是一种脊椎动物，能是七等无颌鱼的祖先。

So many people ask, " Will a sea lamprey attack me while I'm out swimming in the Great lakes or in one of the streams" ?

很多人问，" 当五大湖或溪流中游泳时，会不会有七攻击？"