lead to / / 通向,导致;引起
lead up to / / 把…一直带领到;导致
take the lead / / 为首,领先
learn from / / 学习,向…学习
learn of / / 听到;获悉…的事
learn off / / 记熟,背下来
at least / / 至少,最低限度
in the least / / 一点(也不),丝毫(不)
leave alone / / 不管,不理会;不打扰
leave behind / / 丢弃;留下;忘记携带
leave off / / (使)停止;停下来