Mutual exchanges—where tenants swap council homes with each other—appear to have taken off.
互惠交换，即租户互换其委员会名下的房屋，似乎已经开动了。
生活中的科学
10. Exchange Mutual Respect Respect is a mutual exchange.
10. 相互尊重尊重是一种相互交流。
英语百科
Mutual exchange
The term mutual exchange describes the ability of two (or more) tenants in the public housing sector to move house by swapping their homes. Mutual exchange is possible in some countries, such as the UK and Sweden. Other terms used for this are "home swap" or "homeswap".