当井和一个水池相接时，油通常会从井里上升，因为它与井下的水的密度不同，或者因为停留在它上方的膨胀气体的压力。
When the well reaches a pool, oil usually rises up the well because of its density difference with water beneath it or because of the pressure of expanding gas trapped above it.
然而，这并不能完全解释出外向燃烧的红色膨胀气体的来源。
This doesn't fully explain the source of the red-glowing outwardly expanding gas, however.
电一般是由燃气、汽或某种膨胀气体驱动透平机而产生的。
Electricity is normally generated by turbines driven by combustion gas, steam or an expanding gas.
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