Just over half of this amount comes from voluntary contributions from the Member States; the rest is received from mandatory assessments on those States.

这笔钱中有一半以上来自会员国的自愿捐款，其余是向这些国家征收的法定摊款。

youdao

The law says utilities must purchase a half-percent of solar power by June 2012. The mandatory percentage doubles each year, until reaching 6 percent in 2015.

法律规定，公用事业必须购买太阳能发电，直到在2015年之前达到百分之六的购买率。

youdao