The chemist today has found out how to make new substances by heating materials made of hydrocarbon chain, such as oil or coal, in giant pressure cookers and mixing with them other chemicals.

• 今天的化学家已经找到如何依靠在巨大的压力容器内混合其它一些物质加热由碳氢链组成的物质（如油或煤）制造新的物质的方法。