

Der Urlaub dauert vierzehn Tage.
[deːɐ ˈuːɐ̯laʊ̯p ˈdaʊ̯ɐt ˈfɪrtseːn ˈtaːɡə.]
The holiday lasts fourteen days.
Unser Zug fährt von Gleis vierzehn.
[ˈʊnzɐ ˈtsuːk ˈfɛːɐ̯t ˈfɔn ˈɡlaɪ̯s ˈfɪrtseːn.]
Our train leaves from platform fourteen.
Ist deine Tochter schon vierzehn?
[ˈɪst ˈdaɪ̯nə ˈtɔxtɐ ˈʃoːn ˈfɪrtseːn?]
Is your daughter already fourteen?
"vierzehn" is in the lesson "Numbers" (Level 3), along with 19 other useful words. LinDuo has 180 topic lessons like this one, 2,375 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.