The correlation of oil sources shows that these old asphalt oil pools mostly root in the oil sources of Lower Cambrian and secondly in the oil sources of Silurian.是什么意思_The correlation of oil sources shows that these old asphalt oil pools mostly root in the oil sources of Lower Cambrian and secondly in the oil sources of Silurian.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句