互变的

例句：

1. 1. The two companies are mutually beneficial.
   这两家公司是互惠互利的。
2. 2.The team members are all mutual friends.
   这个团队成员都是彼此的朋友。
3. 3. The relationship between the two countries is mutually assured.
   两国之间的关系是相互保证的。