long adj.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
双语例句
The heavyset gage design provides for long runs on sreerable systems ghrough hard and abrasive formations. 高强度的规径设计使其在含一定研磨性的硬地层中导向钻进可获得长寿命。
The sorption behaviors of actinides and long lived fission products on rock and minerals arestudied by a micrographic method based on autoradiograpy techneque. 应用自射线照相和岩相照相技术联合图象法研究了锕系元素和长寿命裂变产物在岩石和矿物上的吸附行为，直接观察到不同矿物和化学成份对核素的吸附。
