The tone of the speech was upbeat.

这次讲话的语气颇为乐观。

《牛津词典》

There seems to be something like a gentle parody, maybe even a mocking tone that fills the lines of the elder brother's ecstatic speech.

似乎有一种温柔的戏仿，可能甚至是一种嘲弄的语气，充满了哥哥狂热的演讲中。

youdao

Introduction is of great importance since it sets the tone for the speech.

开场白很重要，因为它为演讲奠定基调。

youdao

In his speech to Israelis, Biden's tone was conciliatory.

VOA: standard.2010.03.11

There seems to be something like a gentle parody maybe even a mocking tone that fills the lines of the Elder Brother's ecstatic speech.

似乎有些东西如文雅诙谐的改编作品甚至是嘲弄的语气,体现在大哥入神的讲话中。

耶鲁公开课 - 弥尔顿课程节选

The strangely sermonic tone that this speech assumes is, I think, exactly the point.

演说中奇怪的布道式的语气，我认为，刚好切中要点。

耶鲁公开课 - 弥尔顿课程节选

Note her speech tone, gestures, blinking patterns, etc.

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The speech itself had a very relaxed tone.

CNN: Kerry comes through in the clutch

Mr Cameron struck a self-consciously upbeat tone during much of the speech as he invoked what he called "the British spirit".

BBC: Fight through global economic storm, urges Cameron