

Mein linker Arm tut weh.
[ˈmaɪ̯n ˈlɪŋkɐ ˈarm ˈtuːt ˈveː.]
My left arm hurts.
Hast du dir den Arm gebrochen?
[ˈhast ˈduː ˈdiːɐ̯ ˈdeːn ˈarm ɡəˈbrɔxn̩?]
Did you break your arm?
Das Baby schläft auf meinem Arm.
[das ˈbeːbi ˈʃlɛːft ˈaʊ̯f ˈmaɪ̯nəm ˈarm.]
The baby is sleeping in my arms.
"der Arm" is in the lesson "Body parts 2" (Level 25), along with 8 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.