不及物动词
1. 侵占;侵犯;侵害
If one thing encroaches on another, the first thing spreads or becomes stronger, and slowly begins to restrict the power, range, or effectiveness of the second thing.
2. 侵蚀,侵占,蚕食(土地)
If something encroaches on a place, it spreads and takes over more and more of that place.