We cannot guarantee that every bus will have a guide and so we also have an audio commentary that has been specially recorded for the bus tour by the tourist office.

我们不能保证每辆巴士上都有导游，所以我们也准备了一个音频解说，这是由旅游局专门为巴士之旅录制的。

youdao

It is a bit like a photograph album with audio commentary.

它就像一本带着声音解说的相册。

youdao

Technicians are also testing the feasibility of up to 800 passengers at a time being able to download music and multilingual audio commentary to mobile phones and other devices.

与此同时，技术人员正在测试800位乘客同时用手机下载音乐和多语言音频解说的可行性。

youdao

With Michael Moore narrating almost every moment of the film, an audio commentary was never going to be very likely.

BBC: NEWS | Entertainment | DVD review: Fahrenheit 9/11

The action-packed Blu-ray Disc and DVD are filled with kick-ass bonus features including behind-the-scenes featurettes along with audio commentary with the director, a gag reel and deleted scenes.

ENGADGET: The Expendables 2 Blu-ray ships November 20th and is the first one with 11.1 channel DTS Neo:X audio

Sound Trail users are able to navigate a map of the cemetery, in Church Row, and click on individual gravestones for an audio commentary about the lives of the people buried beneath the headstones.

BBC: Sound trail traces Hampstead graveyard's buried