cata-condensed hydrocarbon

例句：

1. 1. The cata-condensed hydrocarbon is a type of petroleum that has been refined and purified.
   这种缩合烃是一种经过提炼和净化的石油。
2. 2. The use of this cata-condensed hydrocarbon in the production of plastics has greatly reduced waste.
   在生产塑料中使用这种缩合烃大大减少了废物。
3. 3. The cata-condensed hydrocarbon is a valuable resource for energy production.
   这种缩合烃是能源生产的宝贵资源。