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[Subject: Light & Paraphotic Phenomena]
Translated by: LI SHUQING
Translated in 18 languages
- To maintain a position close to, follow every movement of
Translated by: ROBERT GRIGOR BAXTER
Translated in 2 languages
- comparative darkness or obscurity due to interception of the rays of light
Translated by: MAURIZIO FERRIN
Translated in 144 languages