2d (edited) • 🗣️ A.R.T.S 討論區
Guess the word
Level 1. It is a form of light.
Level 2. It is a form of light that most people call it by its acronym. People can use it as a pointer in a meeting or as a toy with their cats.
Level 3. Its different energy levels and wavelengths make it useful in various industries, including medicine, entertainment, manufacturing, etc.
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Guess the word
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