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 “4s” in real conversational contexts with synchronized timestamps and subtitles.
And here's spectra of three supernovae that I studied in the early 1990s.period-- the 4s are coincidental-- the 2-Jupiter-mass planet with a period of 0.7 years, and then this little guy here, which is actually not