laborers

The hardest work was assigned to the strongest laborers.

最繁重的工作分配给最强壮的劳工。

Laborers were trained to handle 50-ton compactors and giant cranes.

工人们接受操作五十吨压土机和巨型起重机的训。

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

国长治，一工人煤场酣睡。

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.

劳动对象是实践客体子系统,劳动者是实践主体子系统,劳动工具是实践介子系统,生产力是实践系统的整体功能。