Petroleum, consisting of crude oil and natural gas, seems to originate from organicmatter in marine sediment.
石油由原油和天然气组成,它们似乎来源于海洋沉积物中的有机物质。
2
As soon as the oxygen is gone, decay stops and the remaining organicmatter is preserved.
当氧气消耗殆尽分解便停止,留下剩余的有机物。
3
The green iceberg did not contain large amounts of particles from these organisms, but the ice had accumulated dissolved organicmatter from the seawater.