Theymay suffocate in the net, because, with their gills constricted, theycannot breathe. If not, they may remain trapped for many hours beforethe nets are pulled in.
3
产品回收网络的设计是逆向物流管理中一个很现实且具有挑战性的问题。
While the design of product recovery networks is one of the challenging and actual reverse logistics problems.