If you can replace a $30,000, $40,000-a-year worker, which you have to pay every year, with a one-time payment of $25,000 for a robot that can work longer hours, a pretty rapid replacement of certain types of jobs.

000 美元来更换一个年薪 30, 000 美元、40, 000 美元的工人（你必须每年付钱）， 如果你可以用一次性支付 25, 换一个可以工作更长时间的机器人， 那么某些类型的工作就会相当迅速地被取代。