mental effort to acquire knowledge in other languages

• English
  

• Arabic
  

• Egyptian Arabic
  

• Armenian
  

• Asturian
  

• Bengali
  

• Bulgarian
  

• Catalan
  

• Chinese
  

• Mandarin
  

• Czech
  

• Danish
  

• Dutch
  

• Esperanto
  

• Finnish
  

• French
  

• Galician
  

• German
  

• Greek
  

• Haitian Creole
  

• Hindi
  

• Hungarian
  

• Icelandic
  

• Irish
  

• Italian
  

• Japanese
  

• Korean
  

• Kurdish
  

• Sorani
  

• Sorani
  

• Latin
  

• Latvian
  

• Lithuanian
  

• Mongolian
  

• Norwegian
  

• Bokmål
  

• Nynorsk
  

• Persian
  

• Polish
  

• Portuguese
  

• Romanian
  

• Russian
  

• Telugu
  

• Turkish
  

• Urdu
  

• Vietnamese
  

• Welsh