淡化

淡化	dàn huà	to water down / to play down / to trivialize / to weaken / to become dull with time / to desalinate / desalination
淡	dàn	insipid / diluted / weak / mild / light in color / tasteless / indifferent / (variant of 氮) nitrogen
化	huā	variant of 花
化	huà	to make into / to change into / -ization / to ... -ize / to transform / abbr. for 化学