laborers

A laborer takes a rest on a cinder dumpsite in Changzhi, China.

在中国长治，一名人在煤渣垃圾场酣睡。

The hardest work was assigned to the strongest laborers.

最繁作分配给最强壮劳。

Subject of labor is practice object subsystem, laborer is subsystem of practice main body, labor tool is practice neutretto system, productivity is the integral function that carries out a system.

劳动对象实践客统,劳动者实践主统,劳动具实践中介统,生产力实践统整功能。