Finding Authentic Video Pronunciations...
Scanning thousands of native English clips with synchronized subtitles and exact timestamps.
Pronunciation Guide
Loading video player...
Listen to native speakers pronounce “caldera” in real conversational contexts with synchronized timestamps and subtitles.
Planetary scientists at that time, when they looked at the moon-- because we'd never been there before-- were seeing all these impact areas that actually theythought were caldera. When they looked at the moon they thought, oh, how look at how volcanic it is.It has all these caldera everywhere.