source of crude

例句：

1. 1. The company's main source of revenue comes from selling crude oil.
   该公司的主要收入来源是出售原油。
2. 2. The discovery of this new source of crude oil has sparked excitement among the industry.
   这一新原油来源的发现引发了行业的兴奋。
3. 3. The refinery is using a new method to extract more crude oil from the same source.
   炼油厂正在使用一种新的方法从同一来源提取更多的原油。