单词	Melancholy and sorrowful
释义	Melancholy and sorrowful 愀怆伤心
随便看	biological energy aquatic plants opportunity biological energy conversion biological energy efficiency biological energy source biological energy sources Biological Energy Sources biological energy store biological engineering biological engineering technology biological enhanced activated filter biological enhancementoxygen biological enhancement technology biological enrichment biological environment biological enzyme biological enzyme finishing Biological enzyme method biological enzyme polishing biological enzymes biological eontrol biological epidemiology biological equilibrium biological equipment biological equivalence biological equivalent element