'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》

The apparently objective, ideologically neutral tone of Chronique de septembre is deceptive.

在意识形态上，《九月纪实》明显客观的中立语调具有欺骗性。

youdao

The tones include the first, second, third, and the fourth tones and the neutral tone.

声调包括第一、第二、第三、第四声和轻声。

youdao

It apparently took just one telephone call from the Kremlin to switch the tone from vehemently anti-Western to broadly neutral.

ECONOMIST: Russia's presidency