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。

youdao

It would be costly for the state, however.

但是这对国家来说是代价高昂的。

youdao

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。

youdao

They said colonies halfway around the world would be costly to protect.

VOA: special.2010.07.22

The researchers knew it would be easier and less costly to map a smaller frog with fewer chromosomal pairs.

VOA: special.2010.06.29

But the changes that would be needed to carry astronauts are costly and untried.

VOA: special.2010.04.28

Duplicating those efforts every year would hardly be efficient and it would be costly.

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Because of U.S. tax laws, it would be costly for the company to repatriate the money.

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An old-style five-year degree at a single campus would be costly, even at central European rates.

ECONOMIST: Central European universities