obelisk
Up to one's ankles in something.
(inorganic chemistry, dated) Sodium thiosulfate.
(Australia) A brush turkey. / (Australia, colloquial) A swagman.
(entomology, of a dragonfly) To adopt the obelisk posture; to point the tip of the abdomen towards the sun.
正午、トンボは過熱を避けるため腹部を垂直に持ち上げる特徴的な姿勢をとった。
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