

Las ruedas de la silla de la oficina son de caucho.
[laz ˈrweðaz ðe la ˈsiʎa ðe la ofiˈθina son de ˈkawʧo.]
The wheels on the office chair are made of rubber.
¿Este material es caucho natural o sintético?
[¿ˈeste mateˈɾjal es ˈkawʧo natuˈɾal o sinˈtetiko?]
Is this material natural or synthetic rubber?
El caucho se obtiene de un árbol tropical.
[el ˈkawʧo se oβˈtjene ðe un ˈaɾβol tɾopiˈkal.]
Rubber comes from a tropical tree.
"el caucho" is in the lesson "Office" (Level 34), along with 15 other useful words. LinDuo has 180 topic lessons like this one, 2,369 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.