Finally, they furnish us with the supply function of labour (or effort); so that they tell us inter alia at what point the employment function for labour as a whole will cease to be elastic.

最后，它们为我们提供了劳动（或努力）的供给函数；因此，他们特别告诉我们整个劳动力的就业函数在什么时候将不再具有弹性。