'So you told her?' he said in a neutral tone of voice.

“那么你告诉她了？”他平静地说。

《牛津词典》

I still didn't like his tone of voice; he sounded angry and accusing.

我仍然不喜欢他说话的语气；他的声音听起来好像是怒气冲冲地在指责人。

《柯林斯英汉双解大词典》

Your tone of voice is as important as the content of what you have to say.

你的讲话声调和你要讲的内容同样重要。

《牛津词典》