All oil companies must work hard to replace the hydrocarbons they use up.
All oil companies must work hard to replace the hydrocarbons they use up.
所有的石油公司都必须尽量争取在石油开采完之前找到其他油田。
All oil companies must work hard to replace the hydrocarbons they use up.
所有的石油公司都必须尽量争取在石油开采完之前找到其他油田。