The overall official language is Hindi.

统一的官方语言是印地语。

Mandarin is the official spoken language of China.

汉语是中国的官方语言。

Mandarin is the official language of this country.

普通话是这个国家的官方语言。

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

他们当时难道不是都说的英语吗？英语不是官方国际飞行语言吗？

And now but the official language is English, right?

不过官方语言是英语，对吧？

In which of these nations is Romansh an official language?

这些国家中哪些国家的官方语言是罗马语？

Which of these African countries has the most official languages?

以下的非洲国家中，哪个国家有着最多的官方语言？

That's the official language the U.S. government is using.

这是美国政府使用的官方用语。

Canada, like Cameroon, has official languages of English and French.

加拿大和喀麦隆一样，有英语和法语两种官方语言。

Spanish is the official language of 21 countries and Puerto Rico.

西班牙语是 21 个国家和波多黎各的官方语言。