Light from this shell arrives unimpeded , but stretched by the cosmic expansion into microwaves .

从壳体内发出的光是畅通无阻的，但是被宇宙大爆炸拉伸成了微波。

" It 's not like the unimpeded global flows of the dollar . To invest in china , you still have to go through intermediary channels , " he said in the commerce ministry 's newspaper .

他在中国商务部主办的报纸上表示，“不同于美元全球投资的畅通无阻，外币来华投资仍需要经过中间渠道才能实现。”

It avoided mention of the sea at all , merely reaffirming " the importance of regional peace and stability , maritime security , unimpeded commerce , and freedom of navigation " .

上面完全避免提到南海，仅仅重申“地区和平和稳定，海上安全，畅通的贸易和通航自由的重要性”。

But what if wi-fi radio beams travelled not just a few hundred feet but stretched for several miles-and were unimpeded by trees , terrain and walls so that they could penetrate all the nooks and crannies within buildings ?

但是假若无线网络信号不只是投射在几百英尺以内，而是能延长至若干英里而且不受树木、岩层、墙壁的阻碍，畅通无阻地到达建筑物里的所有角落呢？