But although the disposal of waste and the proliferation of nuclear weapons are profoundly important issues, the most severe problem may be the high and unpredictable cost of nuclear plants.
不过，尽管核废料处理和核武器扩散这些问题都极其重要，核电站那高昂而又不可控的成本才是最严重的问题。
2
The high environmental cost of Apple's products was revealed when three factories were discovered to be shipping hazardous waste to unqualified disposal companies.
当三家工厂被发现通过水路运输危险地剩料给不具资格的公司处理时，反映了苹果产品的高昂环境代价。
3
Conclusion: Cost reduction for working hours, chemical wastedisposal and laboratory space.