We view friendship more tentatively, subject to changes in intensity as people move, change their jobs, marry, or discover new interests.
in intensity做副词用还是在强度方面？
in intensity，意为“在强度方面”。作定语修饰changes，表示“在...方面”。这种使用方法特别容易见到，又如：
1. changes in public attitudes to marriage
公众对婚姻的怎么看的转变
来自《权威词典》
2. The company has responded sluggishly to these changes in technology.
该公司对这类技术上的变化反应迟缓。
来自柯林斯例句
3. The changes in social work consequent upon reorganization have been considerable.
重组引起社会福利工作发生了重大变化。
来自柯林斯例句
4. Police might now press for changes in the law.
警方目前可能竭力需要修改法律。
来自柯林斯例句
5. Changes in technology may mean that once-valued skills are now redundant.
技术上的改革可能意味着过去被看重的技术目前已变得多余。
来自柯林斯例句
6. Changes in temperature occur slowly and are constrained within relatively tight bounds.
温度变化缓慢，而且局限在相对较小的范围内。
来自柯林斯例句
7. The Atlantic Ocean had undergone changes in temperature and salinity.
大西洋海水的温度和盐度已经发生了变化。
来自柯林斯例句
8. The President hinted he might make some changes in the government.
总统暗示他或许会在政府中进行某些改革。
来自柯林斯例句
