jump to a conclusion贸然断定
join hands with互相合作，携起手来
join in（the game）参加(活动)
join the party/army/club
join（sth）up参军，联起
judging by 从…判断
jump the queue/line 插队；
just now 现在，眼下；刚才

keep down限制，压住;压制;缩减
keep from 隐瞒，瞒住；避开；使免于
keep off 驱散；避开；防止，不接近
keep on 继续…；不停地…
keep to 恪守；遵守；遵循；坚持(做)
keep under control 控制
keep up (with) 跟上；保持；及时了解(情况)
knock down 拆除；拆卸；撞倒；使减价
knock off停止工作；减低，扣掉；匆忙knock out 敲出；击倒；击昏；使失效；
knock over 打翻
keep an eye on 注意，监视
keep away站开；使离开
keep company with 陪伴..
keep early hours 早睡早起
keep from  阻止；使免于；隐瞒
keep in touch with和…保持联系
keep off 避开；不让…接近
keep on good terms 保持友好关系
keep on 继续进行，反复地做
keep one's balance 保持(身体)平衡
keep one's eyes open 留心看着；
keep one's word  守信用，遵守诺言
keep pace with与…齐步前进
keep silence（over 保持沉默，不讲话
keep track/ trace of跟踪；注视…的动向
keep a record of 记载，记录
keep a secret=keep to oneself保守秘密，
kind of+adj  (状语)有点儿，有几分
know about（0f了解，知道…的情况
know better than 很懂得(而不至于)

labour along缓慢而费力地前进
laugh at 嘲笑
lay aside 把…放在一边；储存
learn by heart 记住，背诵
learn from 学习，向…学习
learn of(about) 得知；获悉…的事
leave alone 不管，不理会；不打扰
leave off  使)停止；停下来
lack of 不够；不足；没有
have a good laugh over 对 .大笑一番
laugh off 一笑置之；把…当儿戏
lay down 放下；献出（命）拟订(计划等)；铺设(铁路
lay off 暂时解雇；休养
lay out 展开；铺开；达(想法等)；设计；布置；
lead the way 向导；领路；引路
lead to 领；带；导向；通向；导致；
lean on逼迫；倚靠；
leave behind 抛弃；忘记带；把…拉下；落后
leave out 遗漏；省去；删去；不考虑
lend to 把…借给；把钱贷给；
lend a helping hand 伸出援助之手,
let down (人)失望；放下；放(长)衣服；
let out 释放；放出/发出(水，气)；泄露
line up 排队；
live on以…为生
live through 渡过；熬过
live up to 配得上,不愧于不负；按..行事
live with 接(忍)受(令人不快的事物等)

long for 渴望；向往
look after 照看；照管
look at 看；查看；考虑；对待
look down on/upon 小看…；蔑视…
look for 寻找；寻求；期望；指望
look forward to 盼望；期待
look into 调查；深入了解；研究
look like 看上去像；似将；好像要
look out 当心；注意；警惕；查出;挑选
look over 检阅；检查
look up to 尊敬
lose contact/touch (with) 失去联系；联络中断
lose/save one's face 丢脸；留面子
lose track (of)失去联系
look up查阅，抬头看；看涨
lose heart灰心，泄气
lose one’s way=be lost in..迷路
lose no time立即
lose one's breath喘不过气来，
lose one's nerves 变得慌张，不知所措
lose one's temper 发怒，发脾气
lose sight of 看不见
lose faith in 对失去信任
lost one's balance 失去平衡；心慌意乱