Even today, in our industrial life, apart from certain values of industriousness and thrift, the intellectual and emotional reaction of the forms of human association under which the world's work is carried on receives little attention as compared with physical output. under是介词吗?在这里怎么理解? which又指代什么,作定语吗? world's work什么意思啊?carried on什么意思?receives什么意思?