longadj.长的；冗长的；久的；长音的adv.长期地；久地；用于名词后强调某事发生在某整段时间v.渴望n.长时间；长音节；囤积商品者Longshan龙山

1. Birth Control is a long-term policy.
   计划生育是一项长期政策。
2. These commitments are just the first instalment in what could ultimately be a long-term government policy to use low-carbon growth as a key lever for economic recovery.
   而这些举措仅仅是万里长征的第一步而已，将低碳增长作为实现经济复苏的一个重要杠杆将最终成为政府的长期政策。