longbown.（中世纪时英格兰所用的）大弓；长弓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Long Range Air Navigation System远程空中导航系统Long Range Electronic Navigation远程电子导航long- term effective mechanism长效机制long screw pole drilling machine长螺杆钻孔机long-distance bombing aircraft远程轰炸机Long distance control and record远程抄控Long-distance teaching network远程教学网Long Range Weapons Establishment远程武器研究所long-range development program长期开发计划long distance telephone exchange长途电话局