求翻译：　美国在20世纪80-90年代建立了10MW的Solar One，后来演化为Solar Two；2007年西班牙11MW的PS10电站投入运行，标志着该技术进入商业化示范阶段；2009年4月，到目前为止世界最大规模的塔式电站，20MW的西班牙PS20电站并网发电。是什么意思？

The United States in the 1980s and 1990s to establish a 10MW of Solar One, and later evolved into Solar Two; 2007 the PS10 in Spain 11MW power plant put into operation, marking the technology into the commercial demonstration stage; April 2009, so far the world's the largest tower plant, 20MW power

In the 20th century the United States has established 10 80 - 90 s the Solar MW Solar Two One, later to evolve into Spain; 2007 11 MW PS 10 power plants in operation, marks the entry commercialising the technology demonstration phase; in April 2009, and so far the largest in the world, 20 MW tower p

US has established 10MW Solar One in the 20th century 80-90 age, afterwards the evolution was Solar Two; In 2007 the Spanish 11MW PS10 power plant investment movement, symbolized this technology enters the commercialization demonstration stage; In April, 2009, so far world biggest scale tower system

United States/20th century established a 10MW Solar One, and later evolution of Solar Two;2007 year Spain 11MW PS10 power plant put into operation, marking the commercialization of technology into the demonstration phase; in April 2009, by far the world's most massive Tower power station, 20MW Spain

The United States in the 1980s and 1990s to establish a 10MW of Solar One, and later evolved into Solar Two; 2007 the PS10 in Spain 11MW power plant put into operation, marking the technology into the commercial demonstration stage; April 2009, so far the world's the largest tower plant, 20MW power