People alter their voices in relationship to background noise.

人们根据环境噪音的大小调节自己的声音。

《牛津词典》

There is inherent persuasiveness in some voices.

有些人的声音天生具有一种说服力。

《新英汉大辞典》

I could hear voices in the next room.

我能听到隔壁说话的声音。

《牛津词典》

When they were tired or wanted to be held they cried out in tiny voices and reached up with their little arms.

VOA: special.2009.02.28

Those are two voices that often come, in some ways, come against one another But they also come against the idea of pluralism.

这两种说法常常，会彼此相互攻击,但它们也会攻击多元主义的观点。

普林斯顿公开课 - 人性课程节选

So if you believe in democracy, then you have to listen to the voices of other people in the world.

所以，如果相信民主，那就必须倾听,世界上其他国家人民的声音。

普林斯顿公开课 - 国际座谈会课程节选

Based on what I've heard in the voices of people in the profession, they will not soon forget what happened in Newtown.

CNN: Will media stay focused on gun story?

You could hear it in their voices and see it in their eyes, no matter what they said.

NEWYORKER: The Other Place

He drew powerful and disturbing parallels between the Nazis in Germany and similar voices in Russia.

ECONOMIST: Yegor Gaidar | The