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単純な思い付きが科学的発見に(1)110Level 3Intermediate01:25
頭部の移植は可能なのか?130Level 3Intermediate00:42
日本の科学者たちが触れるホログラムを開発110Level 7Advanced01:45
ナノテクでお手軽に浄水134Level 6Advanced01:52
新しいワンちゃんだ!~Level 3Intermediate00:33