Leadsonn.利德森leadv.引导；领先；带领；过 ... (的生活)；导致n.领头位置；主角；榜样；引言；铅lead cutting knife切铅刀Lead isotope ratio铅同位素比值lead-isotope age铅同位素年代lead precipitating铅沉淀lead transposition导联错位lead tetrachloride四氯化铅,氯化高铅lead ethylcaproate乙基己酸铅lead and zinc mine铅锌矿lead uranium ratio铅铀比leaded up gasoline[化] 加铅汽油