80,on the dot =准时,正点
	  -Did you and Amanda really meet exactly five minutes to two in front of the theater?
	  Yes, we were both there on the dot
	  81,on earth =究竟,到底
	  -How on earth can you believe that?
	  82,on end = 连续,没完没了的
	  -Did Linda ever finish that introductory chapter?
	  I am not sure; she spent hours on end rewriting it
	  83,on one's own =独立的,凭自己的力量
	  -She learned to use the computer on her own
	  84,on sale =减价
	  -Did you buy any of the sweaters that were on sale?
	  Buy any, I got five of them, there were such a good bargain
	  85,on campus =在校内
	  -Michel is the most talented actor on campus
	  Isn’t he though?
	  86,on the side =兼职,副业
	  -He has a job on the side preparing a libratory every day for the next experiments
	  87,once and for all =一次,干脆
	  -I am going to tell that neighbor of mine to turn down that music once and for all
	  I see why you are angry, but I've always found that the polite route is the most effective
	  88,out of =缺乏,没有
	  -I'd like to buy a copy of professor Franklin's book on shells
	  I am very sorry, that you’ve been out of print for some time now
	  -The bookstore is out of textbooks for France 102
	  -How can we be out of salt, I bought them only last week
	  -The bookstore is out of lined notebook paper 划线的笔记本
	  89,out of business =停止,停产
	  -The supermarket down the street is selling everything half price because they are going
	  Out of business
	  Sounds like an idea time to stock up on coffee
	  90,out of earshot = 不在听力所及范围
	  -Hey, Joe, Joe, save your breath
	  He’s out of earshot
	  91,out of it =神情恍惚,心不在焉
	  -Peter's really out of it these days
	  Yeah I know, ever since he met Anne, he’s been in another world
	  92,out of one's mind =神经失常
	  -Gerry says he's planning to take an extra course this term
	  He’s got to be out of his mind
	  93,out of place =场合不合适,不合时宜,不恰当
	  -Just look at that new dormitory, the modern architecture seems so out of place among all the older buildings
	  94,pick up =1,中途搭人或带货
	  -Have you picked up your ID card from the office yet?
	  No the camera for taking photos was broken
	  -Should we ask Paul to pick up our clothes at the dry cleaners?
	  Why not, it’s right on his way home
	  -Professor Corks said you could pick up your term paper today at her office
	  So she's graded it
	  -I hope you had a chance to pick up those financial aid papers
	  I thought I get day to do it later
	  -I thought you were picking David up at the airport
	  How could air on Tuesday night
	  -I'd like to pick this film up by four-tomorrow afternoon
	  I can have it for you at two if you like
	  -I'm going to the vegetable stand(蔬菜店) today, can I pick up anything for you
	  No thanks; I just came back from the market myself
	  -We’ve got a whole hour before the Browns come to pick us up
	  Yeah, but we better get moving
	  -I am going to the snack bar for a couple of coffee
	  Would you like me to bring you back something?
	  Not from the snack bar, but could you pick up a paper for me
	  = 2,拾起,捡起
	  -One team will pick up litter in the picnic area and jogging trail and one will dig out
	  Garbage found in the shallow waters of the lake itself
	  =获得,学会
	  -I know Lorry play the piano but I didn't know she plays the Guitar
	  Neither did I, It seems she just picked it up on her own over the summer
	  95,out of the question =不可能的,办不到的
	  -Could I hand in my paper a few days late?
	  I am afraid that's out of the question
	  96,out of this world =非常好
	  -Have you tried Susan's apple pie?
	  I got the last piece, and it was out of this world
	  97,pass up =错过
	  -I was going to work on my thesis a lot in July, but I 'm sure my advisor wouldn't want me to pass up this opportunity
	  98,pay off =证明是成功的,有好处的或值得的
	  -What a wonderful performance, the marching band has never sounded better
	  Thanks; I guess all those hours of practice are finally paying off
	  99,out of steam =没有力气,泄气,渐渐停止
	  -Let’s jog for another mile
	  I'll try, but I am running out of steam