Older workers were thought to be especially vulnerable because they were engaged in repetitive, unskilled manufacturing, the kind that was easiest to automate.

换句话说三分之一的劳动力，可能会由于机器而失业。年老的工人的处境会更脆弱因为他们从事重复性无技术含量的制造业，而这些行业很容易被自动化取代。