That matters because theory suggests that the maximum sustainable yield that can be cropped from a fishery comes when the biomass of a target species is about 50% of its original levels.

这确有其事，因为理论告诉我们如果一个渔场的总储量如果连起初的最大可承受的捕量的50％都不到，就应该降低捕数量了。

To Buck it was boundless delight, this hunting, fishing, and indefinite wandering through strange places.

巴克非常喜欢这样的安排, 打猎、捕、生的地方无限期地游荡。

The Australian authorities said objects so far recovered from the water were discarded fishing equipment.

澳大利亚当局称到目前为止水域发现的物体都是废弃的捕设备。

We hope it will help to bring about more sustainable fishing practise.

我们希望这能有助于产生更多适当的捕行为。

One reason for this is that fishing technology has improved.

一个原因是天的捕技术已经大大改善。

It does so with no free movement of people, no financial contribution, no requirement to follow most of the level playing field rules and no need to allow EU boats any access to our waters for fishing.

它这样做不会有人才的自由流动，没有财政捐助，没有遵守多数公平竞争的规则，也没有必要允许欧盟船只进入我们的水域捕。

To this day, the lake is an important source of fish for locals.

直到天，该湖仍是当地人捕的重要来源。

Some individuals would therefore not have been caught, since no baited hooks would have been available to trap them, leading to an underestimate of fish stocks in the past.

因此有一些种没被抓到，往后没有饵的钩根本捕不到，导致过去的捕业受到轻视。

Hundreds of thousands of trawlers scrape the ocean bottom and they remove everything in their path leaving devastation behind and its annihilation fishing pure and simple, and it has to stop.

成千上万的拖网渔船海底扫荡，把沿途的一切都清除掉，这是毁灭性的捕，所以必须停止。

The commercial fishing industry is expanding and many people rely on it for their livelihoods, but environmentalists say there are more commercial fishermen and women than the world needs.

商业捕业正扩大，许多人依靠捕维持生计，但环保主义者表示，商业捕人的数量超过了世界的需求。

The further the fishermen are away from land, the more dangerous the task.

但是捕的地方，离开海岸越远，危险的系数就越高。

This past year, just a few weeks ago, California announced it had closed the entire commercial fishing for the whole state, the whole coast, because, essentially, there weren't any fish to fish.

过去一，就几周前，加利福尼亚州宣布关闭整个州，整条海岸线的商业捕作业，因为根本就无可捕。

Uganda has tried to control the amount of fish taken from the lake.

乌干达试图控制从维多利亚湖里捕的数量。

When night falls on Tarawa, the fishermen sometimes recall a centuries-old fishing method.

当夜幕降临塔拉瓦岛时，渔民们有时会想起一种古老的捕方法。

This can lead to overfishing, unsafe and destructive fishing, and other problems.

这会导致过度捕捞，不安全以及破坏性的捕现象，也会带来其他的问题。

It's where they hunted, fished, and harvested.

那里是他们狩猎、捕和收获的地方。

He says they're happening more often and hurting his artisanal fishing business.

他说，这种情况越来越频繁，损害了他的手工捕业务。

Fishing in Senegal is part of the culture, it's been that way for generations.

塞内加尔捕是文化的一部分，世世代代都是这么过来的。

Mastering tricky fishing techniques is a key rite of passage for many water babies.

掌握复杂的捕技巧是许多水中幼崽的重要成长仪式。

Damin usually sets off in the late afternoon and gets the cormorants ready for work.

大民通常下午晚些时候动身，并准备好捕用的鸬鹚。