1. 地雷区;水雷区
A minefield is an area of land or water where explosive mines have been hidden.

2. 危机四伏的局势；充满问题的情况
If you describe a situation as a minefield, you are emphasizing that there are a lot of hidden dangers or problems, and where people need to behave with care because things could easily go wrong.

1. a region in which explosives mines have been placed