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But if robots are to reach the next stage of laborsaving utility, they will have to operate with less human supervision and be able to make at least a few decisions for them- selves—goals that pose a real challenge.

【词汇突破】utility 运用; supervision 监管

【主干识别】they will have to operate and be able to make a few decisions. 并列的两个谓语由and 连接;

【其他成分】But if robots are to reach the next stage of laborsaving utility状语;with less human supervision状语;at least状语;goals that pose a real challenge整个句子的同位语。同位语goals 被定语从句修饰;

【译文赏析】但是如果机器人能在下一个阶段达到节省人工的运用，它们将必须在更少的人力监督之下工作，而且还要至少能够自己做出几个决定--这些目标才会带来真的挑战。