Fuel cell and solar cell are both deemed the best alternatives to gasoline, which both are economic, practical and convenient for usage, plus pollution free.
Fuel cell and solar cell are both deemed the best alternatives to gasoline, which both are economic, practical and convenient for usage, plus pollution free.
两者不仅具备高经济价值、高利用性、高便利性等优点，更无污染环境之虞。