English is the leading international language.

英语是主要的国际语言。

youdao

Weren't they both speaking in English, the official international aviation language?

他们不是都说英语吗？英语是国际航空的官方语言。

youdao

Some nations use English as their official language, performing the function of administration; in others it is used as an international language for business, commerce and industry.

一些国家用英语作为官方语言，并用它履行行政职能；而在其他国家，它被用作商业、贸易和工业的国际通用语言。

youdao

But his expert knowledge of the music and its performers helped make jazz an international language.

VOA: special.2009.01.30

It says the test measures the language skills of people working in an international environment.

VOA: special.2009.01.15

He saw that English was becoming an important international language.

VOA: special.2009.10.16

For example, InterContinental Hotels and Resorts says that it will once again proactively offer all guests a complimentary edition of a daily local language or international language newspaper delivered each morning to their room starting in 2012.

BBC: Extra! Extra! Newspaper delivery fading in hotels

They will also be taught about "cross-cultural awareness", language for international negotiations, devising market strategies and information analysis.

BBC: NEWS | UK | Education | Soviet bomb-makers retrain in UK

The big question: can the world economy in its current condition sustain the advancement of English as a language of international business in the foreseeable future?

FORBES: English - The Language of Global Business?