求翻译：但是由于石油气属于不可再生资源，一个气田的总量是有限的，所以不可能一直上升。是什么意思？

As LPG is a non-renewable resources, the total amount of a gas field is limited, so not been on the rise.

However, as liquefied petroleum gas (LPG) is a non-renewable resources, and a gas field is limited by the total amount, so it is not possible has been on the rise.

But because the petroleum gas belongs to the non-renewable resources, a natural gas field total quantity is limited, therefore is impossible to rise continuously.

However, because LPG is non-renewable resources, a total gas field is finite, so couldn't have been rising.

At present the petroleum is the modern industry society most important raw material.The overwhelming majority transport means use petroleum actuation, the petroleum also is used in addition for to generate electricity, it also is chemical industry important raw material.Many countries have combat re