laborers

The hardest work was assigned to the strongest laborers.

最繁重工作分配给最强壮工。

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

工们接受操作五十吨压土机和巨型起重机训练。

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

在中国长治，一工在煤渣垃圾场酣睡。

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.

对象是实践客体子系,者是实践主体子系,工具是实践中介子系,生产力是实践系体功能。