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词头石; 岩石; 石油; 石 | |||
English thesaurus | |||
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petrify; petrography; petroleum | |||
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petroleum | |||
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petrification; petrological; petrology | |||
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polyethylene terephthalate | |||
polyethyleneterephthalate | |||
polyethylene glycol terephthalate |
petr : 2 phrases in 1 subject |
Earth sciences | 2 |