噴出岩

ふんしゅつがん

• extrusive rock; effusive rock n

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岩風呂

いわぶろ

• bathtub or onsen made of (or surrounded by) rocks n

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含油頁岩

がんゆけつがん

• oil shale n

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油頁岩

ゆけつがん

• oil shale n

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石油頁岩

せきゆけつがん

• oil shale n

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