

I usually parboil the potatoes before roasting them, so they're crispier.
[aɪ ˈjuʒəwəli ˈpɑrˌbɔɪəl ðə pəˈteɪtoʊz bɪˈfɔr ˈroʊstɪŋ ˈðɛm, ˈsoʊ ˈðɛr ˈkrɪspiər.]
Have you parboiled the carrots, or should I do it now?
[həv ˈju ˈpɑrˌbɔɪəld ðə ˈkɛrəts, ɔr ʃəd aɪ ˈdu ɪt ˈnaʊ?]
The recipe suggests parboiling the rice to shorten the cooking time.
[ðə ˈrɛsəpi səˈdʒɛsts ˈpɑrˌbɔɪəlɪŋ ðə ˈraɪs tə ˈʃɔrtn̩ ðə ˈkʊkɪŋ ˈtaɪm.]
"parboil" is in the lesson "Cooking 1" (Level 18), 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.