The first is to use barriers and dams to keep adult sea lamprey from reaching spawning habitat.

第一种是使用屏障和水坝来阻止成年七鳃鳗到达产卵栖息地。

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

有趣是，七鳃鳗世界其他地方被认为是美味佳肴。

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

们身后休伦湖，有80万到15万只寄生海七鳃鳗正游弋。

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

七鳃鳗可能是入侵五大湖最具破坏性物种之一。

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，你可以菜单上找到七鳃鳗以很高价格出售。

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

七鳃鳗能分辨出冷血和温血生物。

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

七鳃鳗实际上是通过运河系统游泳或搭便车进入五大湖。

The sea lamprey is an ancient jawless fish.

七鳃鳗是一种没有颚古老鱼类。

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

如果接近人类，大多数七鳃鳗会游得很快。

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

们是温血，海鳗吃鱼是冷血。

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

五大湖地区人们根本不喜欢七鳃鳗。

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

这些纲类一些便是鱼类，比如：无颚纲鱼形动物，像七鳃鳗、盲鳗和软骨纲鱼，像鲨鱼和魔鬼鱼。

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悔恨，也一定是过多回忆。

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

七鳃鳗被称为五大湖吸血鬼，因为它们附着五大湖上，吸食五大湖本地鱼类血液。

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，会不会有七鳃鳗攻击？"

Primo, the cyclostomes, whose jaws are fused into a flexible ring and whose gill openings are simply a large number of holes, an order consisting of only one family. Example: the lamprey.

第一目，圆口鱼，鳃合成为一个转动圈环，鱼鳃开合有许多小孔，这一目只有一科。类型：人目鳗。

When sea lamprey first and great mated the Great Lakes many people suggested, " Have you considered actually fishing for sea lamprey? Maybe people be willing to eat them" .

当七鳃鳗第一次五大湖交配时，许多人建议说：" 你真考虑过捕七鳃鳗吗？ 也许人们愿意吃它们。"