L
lay off 解雇
least of all 最不
let alone 更不用说
lend a hand 帮忙
live from hand to mouth 收入勉强糊口
look forward to 期待
look for a needle in a haystack 大海捞针
look on the bright side 看到事物光明的一面
look out 当心
look through 浏览
lose heart 失去信心
lose one’s head 不知所措
lose one’s temper 发脾气
lose weight 减轻体重