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The two microphones are flanked by large men .

彪悍的男人站在两个麦克风旁边。

Previous systems used microphones and portable computers .

先前的系统使用的是麦克风和便携式电脑。

Blogs have enabled economists to turn their microphones into megaphones .

博客使得经济学家们把他们的麦克风变成了扩音器。

They even hooked microphones up to the targets that the helicopters destroyed .

他们甚至在直升机摧毁的目标上也安装了麦克风。

Whether these microphones are used to spy on riders is unclear .

目前尚不清楚这些麦克风是否被用来监听乘客谈话。