但八年时间过去了，没有发放任何牌照，美国说，这在很大程度上是因为资本要求、监管壁垒以及其它障碍令这样的合资企业变得不切实际。

But after eight years, no licenses have been granted - largely, the United States says, because capital requirements, regulatory hurdles and other barriers have made such ventures impractical.

youdao

监管方面的不确定性令已于2008年底在美国发布的该扩展包在中国的发布推迟。

Regulatory uncertainty delayed the China release of the expansion pack, which launched in the U.S. in late 2008.

youdao

尽管令监管者不爽，软件无线电的确给通信带来一些有趣的变化。

While it doesn't make regulators happy, software radio does present some interesting opportunities for communications.

youdao