longnn龙眼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Longxuejie powder龙血竭散longan fruit wine龙眼果酒long cycle theory长周期论Long Range Rocket远程火箭long cone cyclone长锥体旋风除尘器long-term needs长期需求long line adapter长线适配器long-span roofs大跨屋盖Longyuan Tianxing龙园甜杏long span project大跨越工程