split second . A very short time；less than a second 一瞬间
The lightning flash lasted a split second，and then disappeared．闪电一下子就消失了。
It all happened in a split second，so nobody knows what really did occur．一切都在一瞬间发生，所以没有一个人知道到底是怎么回事。
sponge on . live on as a dependent or parasite 依赖…生活；寄生于
He is too lazy to work and prefers to sponge on his brother．他懒得去工作，宁可让兄弟来养活他。
He's done no work for years，and lives by sponging on his relations．他几年没有做事，依赖亲戚过日子。
spread out . extend伸展；铺开
The wood spread out in all directions．树林向四面八方延伸。
He spread out his arms and legs．他伸展开了四肢。
He spread out a map．他摊开了一幅地图。
spread out . disperse；scatter分散；散布
The men spread out over a wide area．人们分散在一块很宽阔的区域里。
The work has to be spread out over several weekends．这项工作不得不分散到几个周末去做。
spread out . develop发展
Our foreign trade is spreading out in all directions．我们的对外贸易正向各方面发展。
A scene of prosperity spreads out before us．一幅欣欣向荣的景象展现在我们面前。
spread over . cover；scatter over覆盖；散布于
The water spread over the floor．水溢到了地板上。
His interests now spread over several subjects．眼下他的兴趣遍及好几门学科。
spread over . （cause to）last for（a period of time）（使）持续（一段时间）
Their friendship spread over many years．他们的友谊持续了许多年。
The grammar lectures spread over into the next term语法课延续到下个学期。
You don't need to pay back the money you borrowed all at once；the repayment can be spread over a number of years．你借的钱不用一次全部还清，可以分几年偿还。
spring from . appear suddenly from（somewhere）突然从（某处）出现
He wasn't here a minute ago．Where on earth did he spring from? 刚才他还不在这儿，他是从哪儿冒出来的?
spring from . be the result or outcome of由…造成；出于
Her happiness springs from the love of her family．她的幸福源于对家庭的爱。
He springs from a peasant's family．他出身于农民家庭。
What unhappiness can spring from the love of money！贪财会造成多大的不幸啊！
spring on . tell something to somebody so that he is surprised by it .突然提出
He sprang the news on us without a warning．没有任何暗示，他突然告诉了我们这一消息。
Just as we sat down to dinner，they sprang the news on me that I was scheduled to make a speech．我们刚坐上宴席，他们突然告诉我，已经排定我讲话了。
spring to one's feet . rise quickly，as from a sitting position很快站起身来
The whole crowd sprang to their feet and cheered the victorious team．整个人群都霍然站起来为获胜队欢呼。
spring up . suddenly appear，arise，or develop涌现；发生；迅速长出；迸发
New factories are springing up like mushrooms．新工厂如雨后春笋般地涌现。
Doubts sprang up in his mind．他心中开始产生怀疑。
A breeze suddenly sprang up,．突然吹起一阵微风。
A new custom has sprung up,．一种新的风尚出现了。
spruce up . make somebody or something clean and tidy修饰；打扮
Go and spruce yourself up，Mary，before you go to the party．玛丽，去聚会前，打扮一下自己。
She spruced up the children because their grand father was coming．她把孩子们收拾干净，因为他们的爷爷就要来了。
All the parks have been spruced up for National Day．为庆祝国庆，所有的公园都已装饰一新。
spur on . encourage somebody to try harder鼓舞；鞭策
Father spurred us on to do even better at school．父亲鼓励我们在学校表现得更好。
This success will only serve to spur her on．这一成功只会鼓舞她继续前进。
spy into . examine or investigate carefully and secretly侦查
It is his nature to spy into other people's affairs．他生性好打听别人的私事。
The press raised a hue and cry against Feds spying into people's business through wiretapping．报界掀起一阵喧嚷，反对联邦调查局人员通过窃听电话刺探别人的私事。
spy on . watch secretly what somebody else is doing监视
Our neighbours are always looking out of their windows，spying on us．我们邻居总是透过他们自己的窗户窥视我们。
Tom is paid by the police to spy on other students．警方雇用汤姆秘密监视其他学生的活动。
square up . pay somebody money that one owes结帐；付帐
Will you square up with the waiter while I go and get the car? 我去把车开过来，你来和侍者结帐好吗?
Let's square up，how much is the bill? 我们结帐吧，帐单金额多少?
square up to . stand as if ready to fight somebody 摆好架势
The boys squared up to each other，but the teacher stopped them．男孩们摆好架势准备打架，但老师制止了他们。
The fighters squared up and began to trade blows．拳击手面对面站好，接着就开始对击。
square up to . acknowledge or accept misfortune in a courageous way勇于面对
He squared up to the possibility of losing his job．他正视失业的可能性。
The little boy squared up to his tormentors．小男孩勇敢地面对折磨他的人。