The astronauts used Eagles ascent stage to lift off from the lunar surface and rejoin Collins in the command module.
ðɪ ˈæstɹənˌɔːts jˈuːzd ˈiːɡəlz ɐsˈɛnt stˈeɪdʒ tə lˈɪft ˈɔf fɹʌmðə lˈuːnɚ sˈɜːfɪs ænd ɹᵻdʒˈɔɪn kˈɑːlᵻnz ɪnðə kəmˈænd mˈɑːdʒuːl.