

My uncle served on a submarine in the navy.
[ˈmaɪ ˈəŋkəl ˈsɜrvd ˈɔn ə ˈsəbməˌrin ˈɪn ðə ˈneɪvi.]
Have you ever seen a real submarine up close?
[həv ju ˈɛvər ˈsin ə ˈriəl ˈsəbməˌrin ˈəp ˈkloʊz?]
Tourists can ride in small submarines to see the reef.
[ˈtʊrɪsts kən ˈraɪd ˈɪn ˈsmɔl ˈsəbməˌrinz tə ˈsi ðə ˈrif.]
"submarine" is in the lesson "Transportation" (Level 39), along with 11 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.