他们往往假定机会成本是递增的。

They have tended to assume increasing opportunity costs.

youdao

他们探讨了某些可靠的理论根据，认为以牺牲其它工业来扩展某一工业时，预期机会成本将是递增的。

They thought of some good theoretical reasons for expecting rising opportunity costs in expanding one industry at the expense of others.

youdao

他们探讨了某些可靠的理论根据，认为以牺牲其它工业来扩展某一工业时，预期机会成本将是递增的。

They thought of some good theoretical reasons for expecting rising opportunity costs in expanding one industry at the expense of others.

youdao