单词	occupy oneself
释义	occupy oneselfphr.① 忙著…
随便看	conservation law conservation--law conservation law for angular momentum conservation law of drift conservation law of sand conservation laws conservation of absolute angular momentum conservation of absolute momentum conservation of absolute vorticity conservation of a measurement standard conservation of angular momentum conservation of aquatic resources conservation of area conservation of baryons conservation of charge conservation of complex power conservation of electricity conservation of energy conservation of energy flux conservation of equivalence conservation of functional equation conservation-of heat conservation of heredity conservation of identity conservation of information