Last Updated：2025/11/26
Sentence
地質学者は露頭の脈に埋まっている、酸素とバナジウムを含む三方晶系・六方スカレノヘドラルの黒い鉱物を発見した。
Quizzes for review
Geologists discovered karelianite embedded in the veins of the outcrop.
See correct answer
Geologists discovered karelianite embedded in the veins of the outcrop.
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