A knotted line of sheets trailing from a room high up in one damaged apartment block snaked to the ground below showing how resourceful people had been when their stairways had been destroyed.

一条用床单打结连成的绳子从一栋残余的单元楼的高处一直垂到地面，这是在楼梯被摧毁后聪明的人们想出的逃生办法。

youdao

The purpose of a balanced line is to transfer a "signal" from one place to another while rejecting "ground noise", which is not white noise or hiss, but power line related hum and buzz.

平衡传输线，是将信号从一个地方传到另一个地方的同时抑制“接地噪声”。

youdao

Could I somehow create a flat signal that kept one speaker line high relative to the ground line?

我能以某种方式创造一个平坦的信号，保持一个扬声器线高相对地面线？

youdao