External cutters are generally used to remove the topmost, possibly damaged, portion of a fish to enable an overshot, or similar fishing tools, to engage on an undamaged surface.
外割刀一般用来去除落鱼的最上面的可能被损坏的部分，以便使打捞筒或类似的打捞工具与未损坏的表面接合。
This paper describes the surface test and field application of using explosive method to dispose PDC bit fishing accident.
介绍了大庆油田利用爆炸破碎后打捞的方法，处理PDC钻头落井事故的地面试验及现场施工情况。
A downhole tool used in fishing operations to engage on the outside surface of a tube or tool.
在打捞作业中所用的一种井下工具，在打捞时它与管子或工具的外表面接合。
A downhole tool routinely used in fishing operations to prepare the top and outside surface of a fish, generally to allow an overshot or similar fishing tool to engage cleanly on the fish.
通常在打捞作业中所使用的一种井下工具。它用来制作落鱼的顶部和外表面，以便使打捞筒或类似的打捞工具能够干净地与落鱼接合。
A generic name given to tools that engage on the outer surface of a tubing string or tool assembly, generally for fishing purposes.
与油管柱或工具装置的外表面相接合的工具通称，一般用于打捞目的。
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。
Fishing nets often trap3 dolphins underwater. The animals drown because they cannot return to the surface to breathe.
渔网常将海豚困在海里，致使海豚无法游回到海面呼吸而溺毙。
Fishing nets often trap3 dolphins underwater. The animals drown because they cannot return to the surface to breathe.
渔网常将海豚困在海里，致使海豚无法游回到海面呼吸而溺毙。
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