Finding Authentic Video Pronunciations...
Scanning thousands of native English clips with synchronized subtitles and exact timestamps.
mineral, olivine, pyroxene. These are ordinary minerals. But it's spewed out by stars, supernova, and nova when they explode.
The dust particles accumulate ice mantles. The ice mantle begins with very simple compounds--water, methanol, carbon monoxide, and ammonia. UV radiation is the energy source that drives
a synthesis of all that stuff on the right-hand side, including amino acids, ketones, amides, quinones, and amphiphile.
Listen to native speakers pronounce “mantles” in real conversational contexts with synchronized timestamps and subtitles.