petro- (1)是什么意思，petro- (1)的翻译，petro- (1)音标、读音、用法和例句_开心英文字典

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petro- (1)是什么意思，petro- (1)的翻译，petro- (1)音标、读音、用法和例句_开心英文字典_柠咚词