carbon offset
noun [ U ] environment /ˌkɑː.bən ˈɒf.set/ /ˌkɑːr.bən ˈɑːf.set/ (also carbon offsetting)
碳补偿（力争达到“碳平衡”的项目）
the activity of trying to stop the damage caused by activities that produce carbon by doing other things to reduce it, such as planting trees