lay down . resign辞职
The old man has laid down his office to make way for a younger man．这位老人为了给年轻人让位，辞去了他的职务。
lay down . store away for future use贮藏
They laid down provisions for the voyage．他们贮备粮食以备航行之用。
He has laid down some excellent vintages．他贮藏了非常好的葡萄酒。
lay down . cease using放下
Please lay down the watch gently．请把手表轻轻放下。
Tell your men to lay down their arms . the war is over．告诉你们的人投降吧，战争已经结束了。
lay down . sacrifice牺牲
He laid down his life for the country．他为国牺牲。
Thousands of young men laid down their lives for the cause of peace．成千上万的年轻人为了和平事业献出了自己的生命。
lay down . state clearly and definitely明确规定
It is laid down that no changes can be made after a committee decision．按规定，委员会决定后不能再做任何修改。
The school authorities have laid down some new rules．学校当局制订了一些新的规章制度。
The Act lays it down that no pension can be paid to anyone under the age of sixty unless he is disabled．法令规定，除残废者外，六十岁以下者，不得领取养老金。
lay down . bet下赌注
How much is Martin ready to lay down on the horse? 马丁打算在这匹马上下多少赌注?
lay down . construct；build建造
They are laying down a nuclear submarine．他们正在建造一艘核潜艇。
Several of the new type tankers are being laid down．有几艘新型油船正在建造之中。
The track was laid down in the nineteenth century and is in need of repair．这条铁路是十九世纪铺设的，急需整修。
Many new railways have been laid down in the past few years．几年来建造了许多新铁路。
lay down . plant or sow（a field） with a certain crop； convert（land） into pasture在（耕地上）种上；把（耕地）改成牧场
This year we must lay the big field down to grass．今年我们必须把这块大田改种牧草。
lay down the law . give strict orders下命令；严令
He could usually be found in the centre of a small group of people to whom he was laying down the law．我们常看到他在一小群人当中发号施令。
lay down the law . speak severely or seriously about a wrong doing；scold严厉斥责；呵斥
The principal called in the students and laid down the law to them about skipping classes．校长集合学生严责他们逃课。
Father is laying down the law to the children again； I wonder what they've done now．父亲又严厉地训斥孩子们了，不知道他们现在又干了什么事。
lay down one's cards on the table . put one's cards on the table . let somebody know your position and interest openly； act without trickery or secrets公开表明态度或意愿；行为光明正大
In talking about buying the property Peterson laid his cards on the table about his plans．彼得逊在购买那份产业时，明白说清了他置产的计划。
lay for . hide and wait for in order to catch or attack等待时机（抓住、袭击）
The bandits laid for him along the road．匪徒埋伏在路旁等着他。
lay hands on . lay hands upon . get hold of；seize；get possession of； find得到；找到
If the police can lay hands on him，they will put him in jail．警察若能抓住他，一定会让他入狱的。
I have the book somewhere but I cannot lay hands on it just now．我把那本书放在一个地方，但现在找不到了。
lay hands on . lay hands upon . do violence to； harm； hurt伤害；加害
He laid violent hands upon himself．他自杀了。
They were afraid that if they left him alone in his disturbed condition he would lay hands on himself． 他心情不好，他们担心假如离开他，他会做出伤害自己的事情。
lay in . store away for future use； provide；save贮藏；贮存
We have laid in a good supply of food for the winter．我们已经贮存了足够的粮食过冬。
Every time they came to land， they laid in a good plenty of fresh water．他们每次靠岸都要备足淡水。
lay into . attack physically； go at vigorously殴打；痛击；猛击
The two fighters laid into each other as soon as the bell rang．铃声一响，两位拳手互相猛击起来。
I saw Jones lay into a man twice his size．我看见琼斯狠揍一个比他个子大一倍的男人。
lay into . attack with words用语言攻击；抨击
I let him have his say，and then I laid into him．我让他把话说完，然后把他痛骂了一顿。
The senator laid into the opponents of his bill．那位参议员猛烈抨击了反对他的提案的人。
at the meeting they laid into each other fiercely．在会上他们激烈地相互指责。
lay off . dismiss temporarily，generally because of lack of work临时解雇
If business continues to be slow， we may have to lay off ten people．如果生意继续萧条，我们可能得暂时辞退十个人。
Bill hasn't lost his job． His firm laid him off for two weeks．比尔没有失业，他的公司临时解雇他两个星期。
Was John fired or laid off? 约翰是被解雇了，还是被临时辞退一段时间?
The work there was seasonal， and there was a great deal of hardship among the employees when they were laid off each winter．那里的工作带有季节性，所以每年冬天雇工们被解雇时，日子是很难过的。
lay off . discontinue work or activity；take a rest停止工作或活动；休息
The doctor told him to lay off for a rest．医生嘱咐他把工作停下来休息一段时间。
You'd better lay off smoking for a while．你最好这会儿不要抽烟。
lay off . stop doing something which irritates or annoys；stop bothering；leave alone不要惹人生气；不要打扰别人
I didn't like some of the things he was saying about her so I told him to lay off．他在说她的一些事，我不愿听，所以我告诉他不要再说了。
lay off . stop using or taking戒除；勿再
His doctor told him to lay off smoking．他的医生要他戒烟。
lay off . mark out the boundaries or limits标出界线
The boundaries are clearly laid off on the map．地图上清楚地标出了界线。
lay off . take off；put（a garment，）aside脱掉；把（衣服等）搁在一边
It is time we were able to lay off these heavy winter clothes．现在是我们可以把这些厚重的冬装换下搁在一边的时候了。