| environ. | fossil fuel The energy-containing materials which were converted over many thousands of years from their original form of trees, plants and other organisms after being buried in the ground. Physical and chemical processes occurred in the Earth's crust that changed them into coal, peat, oil or natural gas | 化石燃料 (包含有能量的物质，该物质是经过千万年的变化，从原始的动植物或有机物形式，通过在地下的掩埋形成。地壳内部进行的物理化学变化，使其变成煤、泥炭、石油或天然气。) |