text_original: Then the earth tremor came unmistakably, and his thoughts flashed back to the mass of rock above the mouth of the cave.
text_transcription: THEN THE EARTH TREMOR CAME UNMISTAKABLY AND HIS THOUGHTS FLASHED BACK TO THE MASS OF ROCK ABOVE THE MOUTH OF THE CAVE
phonemes: ðˈɛn ðɪ ˈɜːθ tɹˈɛmɚ kˈeɪm ʌnmɪstˈeɪkəbli, ænd hɪz θˈɔːts flˈæʃt bˈæk tə ðə mˈæs ʌv ɹˈɑːk əbˌʌv ðə mˈaʊθ ʌvðə kˈeɪv.