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1. 西班牙的官方语言是西班牙语，又称为卡斯蒂利亚语。

   xī​bān​yá de guān​fāng​yǔ​yán shì xī​bān​yá​yǔ, yòu chēng​wéi kǎ​sī​dì​lì​yà​yǔ.

   The official language in Spain is Spanish, which is also known as Castilian.

   Source: CCMatrix