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

You can be easy and gentle when you use the phrase "Let me".

你能用即轻松又有礼貌的方式使用“Let me”。

Let me 课堂 - SpeakingMax英语口语达人