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”。

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Hiss friend Govinda, another son of his beloved Brahmin, more than any other person.

他的朋友侨文达，另一位婆罗门之子，对他的敬爱超过了其他任何人。

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He did not know anything beyond the hiss and screech of fighter planes passing overhead and the missiles falling, the bears bellowing in another part of the fortress, and the sudden silence of the birds.

NEWYORKER: The Tiger��s Wife