longann.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long term cycle长期旋回long shaft part长轴零件Longzhou County龙州县Longdong Plying陇东皮影long and shorts尤指古希腊和古拉丁的音量诗longifolic acid长叶酸long stem valve长杆阀long wavelength长波长long reach mike远距离话筒long distillate宽馏分

1. Supply should be guaranteed for these products which sell well over a long period of time.
   这些长销产品，应该保证供应充足。