The robots in Asimov's fiction expose complications and loopholes in the three laws, and even when the laws work, robots still have to assess situations.
2017年12月六级真题（第二套）阅读 Section C
柯林斯高阶英汉双解学习词典释义
N-COUNT
（法律上的）漏洞，空子
A loophole in the law is a small mistake which allows people to do something that would otherwise be illegal.