在托福听力的备考过程中，有一些词汇总是会让我们误会它的意思。我们都把这些词叫做疑难词组，为了让大家更好的学习对托福听力进行学习，环球教育小编给大家整理了这一系列的疑难词，希望对同学们有所帮助。

　　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 =最后一次，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

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