Workers later added cement to harden in the well to seal it permanently.

VOA: special.2010.08.07

Is that how important is it that we get control of that border and seal it, so to speak.

对于我们来说,控制或者是夺取这个关口，是不是很重要呢。

普林斯顿公开课 - 国际座谈会课程节选

Still,Europe is pushing ahead, hoping parties to the Nabucco pipeline will seal a deal with Turkey by June.

VOA: standard.2009.05.08

Those that meet Green Seal's requirements are allowed to use the organization's logo in their advertising.

VOA: standard.2009.03.30

Green Seal's Arthur Weissman says that in addition to government, consumers have the power to make the economy green, and they are starting to do that.

VOA: standard.2009.03.30

Green Seal was created 20 years ago to help eliminate the confusion.

VOA: standard.2009.03.30

But Weissman says the survey by Green Seal and the firm EnviroMedia Social Marketing shows that consumers are uncertain how to tell whether a product helps the environment.

VOA: standard.2009.03.30