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（单词翻译）
本期内容：
The world is widely considered to be on the cusp of afourth industrial revolution – one where machines willbe able to do many of the jobs currently performed byhumans, and perhaps even do them better. It is afuture that promises greater efficiency and cheaperservices, but one that also could herald widespreadjob losses. The good news is that many of us willprobably be safe in our jobs for some time to come.The researchers predict there is a 50% chance thatmachines will be capable of taking over all human jobsin 120 years.
Cusp: 转折点
Herald: 预示
Widespread: 广泛的
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