laugh at 嘲笑
lead to 导致，导向
let in 让……进来，放进
let out 放掉, 泄露
live on 以…为主食，靠…为生
look after 照顾
look ahead 向前看，展望未来
look down upon 看不起，轻视
look for 寻找
look forward to 盼望
look into 向…里面看去; 调查
look out 留神，当心
look through 看穿, 浏览
look up 查找
lots of 许多，大量