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Scanning thousands of native English clips with synchronized subtitles and exact timestamps.
Pronunciation Guide
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Listen to native speakers pronounce “light pen” in real conversational contexts with synchronized timestamps and subtitles.
professional fields. For example, this person is Avan Sutherland, and this pen he's holding is called a light pen.With a light pen, you could draw directly on this brown card like this. What you see here is the first CAD, andthis person is considered the pioneer of computer graphics.