He spoke in a voice not sure what he said.

VOA: special.2010.05.08

What we see here is a doubled voice.

在这里，陈述的声音开始分裂成。

耶鲁公开课 - 1945年后的美国小说课程节选

who watch the news and see the pictures but when they're able to put a true voice and face to what's going on down there and I think said McPhee.

VOA: standard.2010.06.19