But the cost of keeping the animals in and the poachers out may make them uneconomic .
但看住动物、管住偷猎者的成本却使其无法赢利经营。
Backward farming methods made grain production uneconomic in the region .
这个地区落后的耕种方法使得粮食生产无法赢利。
Feather bedding is an increasingly uneconomic industry .
做羽绒床垫是愈来愈赚不到钱的行业。
Despite huge demand from richer coastal cities for lng , as a clean-burning fuel , the controls made signing long-term contracts uneconomic when global prices began to rise rapidly in about 2002 .
But , mr widdows and other critics point out , if such large vessels operate less than fully loaded , their higher overall operating costs can make them hopelessly uneconomic .
" These changes will make some business lines or markets uneconomic , so banks have to decide what they are going to keep , " she says .
“这些改革将导致部分业务或市场变得无利可图,因此,银行需要决定保留哪些业务或市场,”她表示。
Compaction pressure rises significantly if higher as-pressed densities are required , and this practice becomes uneconomic due to higher costs for the larger presses and stronger tools to withstand the higher pressures .
European banks are suffering from cyclical issues such as a weak economy , less trading activity , higher costs of funding and a low interest rate environment that all add to the structural difficulties that come from tighter regulation and make certain business areas uneconomic for all but the largest operators .