词汇	explanatory theory
释义	explanatory theory 解释性理论
随便看	labo u r-saving equipment labour-saving household appliances labour saving industry labour-saving industry labour saving invention labour-saving invention labour saving investment labour-saving investment labo u r-saving investment labour-saving machinery labour saving machinery industry labour-saving method labour saving ratio labour-saving ratio labo u r-saving ratio labour saving technical change labour saving technical progress labour-saving technical progress labour schedule labour scheduling labour school labour science labour security labour service labour-service