You can describe the action or process of encroaching on something as encroachment .
例句
It's a sign of the encroachment of commercialism in medicine...这是医药界被逐渐商业化的一个的征兆。The problem was to safeguard sites from encroachment by property development.问题是要保护遗址免受房地产开发商的侵占。
英汉词典释义
n.
侵入,侵占;侵蚀
I resent all these encroachments on my valuable time.我不满所有这些占用了我的宝贵时间的行为。
英英词典释义
Noun
1. any entry into an area not previously occupied;
"an invasion of tourists""an invasion of locusts"
2. entry to another's property without right or permission
3. influencing strongly;
"they resented the impingement of American values on European culture"