The main objection to the plan was that it would cost too much.

反对这个计划的主要理由是费用过高。

《牛津词典》

My main objection to the plan is that it costs too much.

我反对该计划的主要理由是它费用太高。

youdao

The main objection to such a policy is the risk of destabilising the European banking system.

重组这项政策的主要障碍是其可能使欧洲银行体系动荡的风险。

youdao

The main objection to the drug, he says, is that it's too good to be true.

FORBES: French drug giant Sanofi prepares for fat city.

Their main objection is that it will be inflationary--some argue inflation will balloon sooner rather than later.

FORBES: Magazine Article

The main objection to the EU's policy is that it applies to air-miles clocked up outside European airspace.

ECONOMIST: Planes and pollution