

Das Kupferrohr lässt sich mit Hitze leicht krümmen.
[das ˈkʊpfɐˌroːɐ̯ ˈlɛst ˈzɪç ˈmɪt ˈhɪtsə ˈlaɪ̯çt ˈkrʏmən.]
The copper pipe can easily be bent with heat.
Durch die Feuchtigkeit hat sich das Holz gekrümmt.
[ˈdʊrç ˈdiː ˈfɔɪ̯çtɪçkaɪ̯t ˈhat ˈzɪç das ˈhɔlts ɡəˈkrʏmt.]
The wood has warped because of the moisture.
Pass auf, dass du das Blech nicht zu stark krümmst.
[ˈpas ˈaʊ̯f, ˈdas ˈduː das ˈblɛç ˈnɪçt ˈtsuː ˈʃtark ˈkrʏmst.]
Be careful not to bend the sheet metal too much.
"krümmen" is in the lesson "Do it yourself" (Level 20), 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.