Now that expense can be huge, but if the town can mobilize X amount of volunteers for Y hours, the dollar value of that labor used goes toward the town's contribution.
其余15%需要城镇自行承担 这笔支出数额巨大 但如果可以发动X个志愿者服务Y个小时 所创造的美元价值... ...会直接计入城镇开支之中