The crocodile killed its prey by keeping it under and drowning it.

鳄鱼把的物按在水下淹死。

New methods of setting nets have reduced the bycatch of dolphins but not of other species, such as billfish, turtles and sharks.

布设渔网的一些新方法已经减副物海豚的，没有减一些生物的，象长嘴鱼、海龟和鲨鱼。