他们看见他正用拖网捕鱼，因此他们知道那里有鱼。
They had seen him trawling and therefore knew that there were fish.
她会步行到海滩去看夜间工作的渔民在浅水中拖网捕鱼。
She would walk on to the beach and watch the night fishermen trawl the shallow waters.
但在海底，拖网捕鱼是很残酷的。
拖网捕鱼是最被广泛使用的捕捞方式。
渔船已出海，在海湾用拖网捕鱼。
拖网捕鱼被认为是破坏性第二大的商业捕鱼形式(电气捕鱼最甚)。
Trawling is arguably the second most destructive type of commercial fishing (electro-fishing being the worst).
用拖网捕鱼时，渔船拖着一个袋状的网，从海底兜网鱼类。
In trawling, a fishing boat drags a bag-shaped net along the sea bottom.
渔业与环境：一个新发明可以降低拖网捕鱼法对珊瑚、海绵、海藻和其他海底生物的危害。
Fishing and the environment: a new invention makes trawling for fish much less harmful to coral, sponges, seaweed and other denizens of the seabed.
不过，由于当时全球只有甚少国家实施禁止拖网捕鱼，因此普遍认为成功修例的机会不大。
However, as only a few countries in the world have imposed such a ban, our chances were regarded as slim.
事实上拖网捕鱼就像是彻底砍伐树木，从实用角度讲，这种栖息环境的破坏促使世界范围的鱼群缩小。
Indeed, trawling has been compared to clear-cutting trees. Moreover, from a practical point of view, this destruction of habitat contributes to the dwindling of fish stocks worldwide.
用拖网捕鱼时，渔船拖着一个袋状的网，从海底兜网鱼类。鳕、比目鱼、黑线鳕等都是用这种方法捕捞的。
In trawling, a fishing boat drags a bag-shaped net along the sea bottom. Fish such as cod, flounder, and haddock are caught in this way.
包括澳大利亚、美国、中国内地、加拿大和巴西在内的很多国家虽然都已划定了大范围的禁止拖网捕鱼的区域，但并未实行全面禁令。
Many countries, including Australia, the U.S., China, Canada and Brazil have implemented large no-trawl zones, but stopped short of a complete ban.
包括澳大利亚、美国、中国内地、加拿大和巴西在内的很多国家虽然都已划定了大范围的禁止拖网捕鱼的区域，但并未实行全面禁令。
Many countries, including Australia, the U.S., China, Canada and Brazil have implemented large no-trawl zones, but stopped short of a complete ban.
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