The law of supply and demand also explains the low wages for jobs that attract a large number of workers,either because the work is pleasant,or be-cause it requires no training.

• 有的工作或是因为能够使人愉快，或是因为不需要经过任何训练，从而吸引了大批的工人，供求规律也可以解释这样的工作为什么工资低。