Despite complications and concerns, the upsides of sharing can be significant.
2017年12月六级真题（第二套）阅读 Section B
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
These new complications require the money and labor of many nations.
2019年6月六级真题（第二套）听力 Section C
柯林斯高阶英汉双解学习词典释义
N-COUNT
使复杂化的难题(或困难)
A complication is a problem or difficulty that makes a situation harder to deal with.