Opponents worry that such expansion would be costly for taxpayers, but advocates say it would save money in the long run.
反对者担心这样的扩张会让纳税人付出高昂的代价，但支持者说，从长远来看，这种扩张可以节省资金。
It would be costly for the state, however.
但是这对国家来说是代价高昂的。
They would be costly and the net benefits might well be negative.
他们会耗费成本，带来的净收益也可能是负面的。
Systematic and detailed understanding of the chemistry, topography and flow of the waters that cover two-thirds of the planet would be costly, but it could be achieved.
系统而详实了解覆盖地球表面三分之二的海洋水域的化学特性、地形及水流特性代价高昂，但是可以实现的。
Because its electricity would be costly, commercial success is far from assured.
该计划所生产的电力相当昂贵，因此未来是否能商业营运仍有问题。
For the others, moving the business would be costly, because bank-holding companies generally have a higher cost of funding than bank subsidiaries.
对于其它企业，转移业务成本是高昂的，因为银行控股公司通常比银行附属机构有更高的筹资成本。
For the others, moving the business would be costly, because bank-holding companies generally have a higher cost of funding than bank subsidiaries.
对于其它企业，转移业务成本是高昂的，因为银行控股公司通常比银行附属机构有更高的筹资成本。
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