shark
(medicine) A reduced degree of facial expression.
(obsolete) To look for, search after. / (rare, dialectal or obsolete) To gaze or stare.
(ichthyology) A scaleless, predatory fish of the superorder Selachimorpha, with a cartilaginous skeleton and 5 to 7 gill slits on each side of its head.
(organic chemistry) Any fatty acid having twelve carbon atoms and one double bond, but especially 2-dodecenoic acid which is a signal molecule produced by Burkholderia cenocepacia
軟骨魚類で、頭の両側にそれぞれ5～7本の鰓裂を持つ無鱗の捕食魚であるサメが、潜水員たちが安全な距離から見守る中、難破船の周りを回った。
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