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。
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.
你还可以通过网络购买不同语言的音频书籍，在很多情况下，文本也可以在像“古藤堡”这样的网站上下载到的。
You can also buy audio books in various languages via the Web, and in many cases the texts are also available for download at sites like Gutenberg.
可利用的语言教科书和教学音频非常多。
There aredozens of language instruction books and audio programs available.
应用推荐