 |
| Chinese | English |
| 无污染性燃料 | non-polluting fuel Clean fuel that does not release polluting emissions in the environment, such as methane (清洁燃料，不会在环境中排放污染物，如甲烷。) |
|
| Chinese | English |
| 无污染性燃料 | non-polluting fuel Clean fuel that does not release polluting emissions in the environment, such as methane (清洁燃料，不会在环境中排放污染物，如甲烷。) |