Furthermore, in the early days of longline fishing, a lot of fish were lost to sharks after they had been hooked.

而且早期用延绳钓捕鱼的时候， 有许多鱼在上钩后就被鲨鱼吃了。

The Spanish fleet of so-called surface longline fishing boats ostensibly targets swordfish, but 70 per cent of its catch, by weight, from 2000 to 2004 were pelagic sharks.

西班牙所谓的拖网渔船船队表面上是以旗鱼为目标，但从2000年到2004年，它70%按重量计算的捕获物是深海鲨鱼。

Furthermore, in the early days of longline fishing, a lot of fish were lost to sharks after they had been hooked. That is no longer a problem, because there are fewer sharks around now.

因为没有足够的鱼钩来诱捕，某些鱼就逃过一劫，这会导致对以往鱼类资源存量的低估，再者，在早期的延绳钓时代，许多已经勾住的鱼会落入鲨鱼的口中。