将下列段落翻译 In 1974, Japan made and carried out "New Energy Developing Plans"("the Sun Plan").Its core content is to take use of solar energy as well as to develop geothermal energy, to improve the technologies of both liquefaction and gasification of coal to research in wind powering and large wind power machine, to develop ocean energy and overseas transmission technologies of overseas clean energy. In 1978, Japan started "Energy Saving Development Plans"("the Moon Plan").In 1993, Japanese government combined such two plans, and came up with a new plan called "Comprehensive Technology Development Plans in Energy and Environment" or "the New Sun Plan". The main tasks for this plan include seven sections: renewable energy technologies, fossil fuel application technologies, energy transmission and storage technologies, systematization technologies, fundamental energy-saving technologies, effective and innovatory energy technologies and environmental technologies. The plan is expected to last until 2020.