例143　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 themselves—goals that pose a real challenge.

【结构分析】if robots are to reach the next stage of laborsaving utility是个很长的状语从句，句子主干的主语是they，后面是动词will have to operate，介词短语with less human supervision做状语，修饰动词，and后面是并列动词be able to make，宾语是a few decisions，后面有that pose a real challenge，修饰前面的名词。

【亮点回放】此句话的亮点在于比较长的条件句if，后面是两个特别重要的动词并列，都很有气势，其中第二个并列句里面套有定语从句。

【核心词汇】

next stage　下个阶段

laborsaving utility　节省劳动力使用

less human supervision　很少的人类监督

a few decisions　一些决定

pose a real challenge　设置真正的挑战

【参考译文】但是如果机器人要达到节省人工的下一个阶段，它们将必须在更少的人力监督之下工作，而且还要能够自己做出至少几个决定——这些目标才会引发真正的挑战。