In theory, ratings agencies and mathematical models help investors price the risk they are taking on, even if the securities they are buying are scarcely traded.

理论上，证券评估机构和数学模型帮助投资者评价自身的风险，即使手中的股票很少进行交易。

youdao

In theory, consumers could steer firms towards waste reduction by buying products that are easy to recycle, say, or have only minimal packaging.

理论上讲，消费者购买容易回收的产品，或者是包装最简单的产品，能引导企业实现减少废弃物。

youdao

In theory, the Bank of England should be able to reverse these adverse trends by buying assets on a fairly modest scale.

理论上，英国银行应该有能力通过购买中等规模的资产扭转这种不利局面。

youdao

I'm not buying the theory that the acquisition of Motorola puts Nokia and Research In Motion into play.

FORBES: The Tech Trade

"An insurer could contend that a subscription to 'Hang Gliding Monthly' is predictive of highly dangerous behavior, but I'm not buying that theory: The consumer may be getting the magazine for the pictures, " says Thomas Considine, New Jersey's commissioner of banking and insurance.

WSJ: Insurers Test Data Profiles to Identify Risky Clients

Folks buying everything from cellphones to corporate computer systems are changing their buying habits--in theory, at least.

FORBES: Magazine Article