The United Nations Security Council later imposed sanctions on Pyongyang, which have impeded its efforts to sell conventional weapons abroad, a major source of income for the cash-strapped nation.

VOA: standard.2009.12.08

But cutting is something fearful and forceful; it's a kind of controlled violence. Frost takes it for granted that we will remember that the scythe is a conventional image for time, which harvests all of us in death.

但是割草是很有力的也是很可怕的;,这是一种控制中的蛮力，弗罗斯特认为,我们将把镰刀作为时代的产物记住，镰刀一直收获直到我们死去。

耶鲁公开课 - 现代诗歌课程节选

But if most people who are good borrowers, who know what they're doing, want these, they want a conventional thirty-year mortgage because it will fix a mortgage payment for the rest of the thirty years and you have nothing to worry about.

但是如果大多数人是优质借款人,他们知道自己在做什么,他们会选择普通30年期抵押贷款,因为在剩余的30年时间里,抵押贷款的偿付是固定的,你不需要为它担心

耶鲁公开课 - 金融市场课程节选

The International Energy Agency, an intergovernmental energy advisor, has projected an almost in conventional oil production by 2020 and the potential for a serious gap between supply and demand by 2015.

VOA: standard.2009.10.20