zài / zhè / mén / zhèngzhì jīngjìxué / kèchéng / zhōng / xuéshēng / xūyào / qūfēn / bì yào láo dòng / hé / shèngyú / láodòng

在这门政治经济学课程中，学生需要区分必要劳动和剩余劳动。

In this political economy course, students need to distinguish between necessary labor and surplus labor.