

Im Winter ist es früh dunkel.
[ˈɪm ˈvɪntɐ ˈɪst ˈɛs ˈfryː ˈdʊŋkl̩.]
In winter it gets dark early.
Ist es draußen schon dunkel?
[ˈɪst ˈɛs ˈdraʊ̯sn̩ ˈʃoːn ˈdʊŋkl̩?]
Is it already dark outside?
Mein Zimmer ist leider sehr dunkel.
[ˈmaɪ̯n ˈtsɪmɐ ˈɪst ˈlaɪ̯dɐ ˈzeːɐ̯ ˈdʊŋkl̩.]
Unfortunately, my room is very dark.
"dunkel" is in the lesson "Properties" (Level 26), along with 9 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.