单词	十年树木,百年树人
释义	同十年樹木,百年樹人
随便看	hydrogen cyanide (hcn) hydrogen cyanide laser hydrogen cycle hydrogen damage hydrogen damage{hydrogen attack} hydrogen-deficient star hydrogen density hydrogen--density hydrogen detection sensitivity hydrogen deuteride hydrogen/deuterium isotope effect hydrogen-deuterium-oxygen hydrogen dew point monitor hydrogen dilution hydrogen dioxide solution hydrogen discharge lamp hydrogen-discharge lamp hydrogen discharge tube hydrogen-discharge tube hydrogen, dissolved hydrogen disulfide hydrogen donator hydrogen donator--hydrogen donor hydrogen donator;hydrogen donor hydrogen donor