UFO nests
(organic chemistry) Modified by the addition of, or by cyclization to form, a cyclohexane ring
plural of UFO nest
plural of toilet slipper
plural of quaestio
研究者たちは砂漠で奇妙な円形の構造を発見し、それが未確認飛行物体の巣かもしれないと考えています。
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