leadoffn.开始；著手；第一拳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 free soldering无铅焊接lead - base alloy铅基合金lead bath quenching铅浴淬火lead-free package无铅封装lead sub- acetate醋酸铅lead-covered wire铅皮线lead-covere cable[电] 铅包电缆lead in environment环境铅lead someone astray引诱某人堕落,将某人引入歧途,把某人带坏lead-pipe rigdity[医] 铅管样强直