57.there is no echo signal. But brightness, scanning line are still exists.

没有回波，但亮度，扫描均正常。

58.there is no echo and brightness, it is examined that fuse has broken.

雷达无亮度，无回波。经查为保险丝烧断。

Yet when I arrived in Riga, there were no echoes of the Occupy here.

然而，当我到达里加时，这里没有占领运动的回声。

And then I heard an echo sent back by hills, but there's no echo here, in the middle of the wood.

然后我听到山丘传来的回声，可我们这里没有山丘，是在树林当中。

Echoes of the intruders penetrated every corner, and in my own college was no echo but an original font of the grossest disturbance.

入侵者的回声穿透了每一个角落，在我自己的大学里，没有回声，而是最粗暴骚动的原始源泉。