1. Complex problems or matters that are difficult to understand, resolve, or deal with due to multiple interconnected factors
The peace talks addressed complicated issues such as border disputes and resource allocation.
As negociações de paz abordaram questões complicadas, como disputas fronteiriças e alocação de recursos.
2. Sensitive or intricate topics that involve multiple perspectives or conflicting interests
Healthcare reform involves many complicated issues that require careful consideration.
A reforma da saúde envolve muitas questões complicadas que requerem consideração cuidadosa.