而在地中海，在旗鱼的捕捞中，它们占副渔获物的九成。
And in the Mediterranean, in the swordfish net fisheries, they make up up to 90 percent.
我们离开了该站，以便早日以副渔获物的第一次训练。
We left for the station so early as to catch the first train.
很不幸，在加州漂网的副渔获物中，翻车鱼占到了26%。
And unfortunately, they make up a large portion of the California by-catch — up to 26 percent of the drift net.
由于渔具不同的选择性和多鱼种鱼类共栖，人们在对目标种类进行捕捞时，不可避免地产生副渔获物及其抛弃。
Because of the selectivity of fishing gear and mixed distribution of fish species, there will be inevitably by-catches and discards when people catch the target species.
实践证明，拖网分离栅能够有效地提高拖网作业的选择性，降低副渔获物和抛弃，保护渔业资源，因此，许多国家通过立法使其被强制使用。
Trawl sorting grids can effectively enhance the selectivity of trawl, reduce by-catch and discards, protect fish resources, which are compulsively used in many countries by legislation.
实践证明，拖网分离栅能够有效地提高拖网作业的选择性，降低副渔获物和抛弃，保护渔业资源，因此，许多国家通过立法使其被强制使用。
Trawl sorting grids can effectively enhance the selectivity of trawl, reduce by-catch and discards, protect fish resources, which are compulsively used in many countries by legislation.
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