Now,unless Congress changes the law, network providers can slow or block services of competitors.

VOA: special.2010.04.09

And we combine this with first law, which for the case of pressure volume changes we write as this.

结合第一和第二定律,对于压强体积功我们可以这样写。

麻省理工公开课 - 热力学与动力学课程节选

"An empowered group of ministers has been set up to study whether any changes in the law are necessary.

VOA: standard.2010.06.10

Noble says it is one of many changes that have improved law enforcement during the past seven years.

VOA: standard.2009.11.09