For Postcrossing to work worldwide, a common communication language is needed so that everyone can understand each other.

为了使 Postcrossing 网站能在世界范围内发挥作用，需要一种共同的交流语言，以便大家能够相互理解。

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A common communication language (XML).

公共通信语言(XML)。

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The park's official communication language is English and Chinese (Mandarin and Cantonese).

公园的官方沟通语言为英语和中文(普通话和粤语)。

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"It is also worse in deprived areas, where 41% of children are not working securely in communication, language and literacy, " it adds.

BBC: Nurseries and childminders to face tougher inspections

Linguists are chronicling how nomadic communication changes language itself, and thus thought.

ECONOMIST: Nomads at last

Whether the additional communication provided by language is another such selective pressure remains to be seen.

ECONOMIST: Smell, vision and genes: More colour, less odour | The