LAN (local area network)
局域网
例句：
Aston University has installed a local area network (LAN) linking 2000 terminals.
阿斯顿大学已经建成了一个可以连接2,000个终端的局域网。
into the blue
消失得无影无踪
 
例句：
At the bark of the dog, some birds stayed astonished, others disappeared into the blue.
听到狗的叫声，有的鸟儿被惊呆了，其它的飞得无影无踪了。

palmtop
掌上计算机   
例句：
A palmtop's ancestry owes more to the electronic calculator bthan to the PC.
掌上计算机的祖先更象是电子计算器而非个人计算机。
for the time being
暂时
 
例句：
For the time being, you will have to share this room with another person.
你暂时得和另外一个人合住这个房间。
How can I get in t

notebook
笔记本电脑 
例句：
The main advantage of using a notebook computer is that you can take all your programs and files with you wherever you go.
使用笔记本电脑的最大好处就在于你可以将自己的程序和文件随身携带。
pick up the bits
收拾残局
 
例句：
It's Tom's mother again who is picking up the bits.
又是汤姆的妈妈在收拾残局了。

mainframe
大型计算机 
例句：
For all their faults, mainframes are highly efficient data stores: reliable, secure, and no longer prohibitively expensive.
尽管大型计算机还有许多缺点，它仍然是高效的存储工具：安全、可靠，而且价格便宜。
come up with
提出……；想出……
   
例句：
Jack came up with a new idea at the meeting.
杰克在会上提出了一个新

theory
理论 
例句：
Theory tell us that temperature measurements need to be repeated every five years to pick up warnings of real climate change.
理论告诉我们，温度的测量应该每五年重复进行一次，这样才能捕捉到天气变化的各种先兆。
can never be too...
越……越好；再……也不过分
   
例句：
As a teacher, you can never be too patient with sl

everlasting
经久耐用的 
例句：
These tyres are advertised as being everlasting.
广告上说这些轮胎经久耐用。
a pat on the back
赞扬，鼓励
 
例句：
For children, a pat on the back is much more beneficial to their healthy development than blaming them.
对于儿童的健康成长来说，鼓励他们要比责备他们更有益。
Do you have any hob

flaky
（想法）不切实际，古怪
例句：
There was no support for Bill's plan to hold a floodlit open-air concert in the middle of winter, and everybody thought it was a very flaky idea.
比尔居然想在隆冬时节举办一场露天灯光音乐会，大家都认为着这是一个怪念头，所以也就没人支持他。
make...a hit
使……大获成功
例句：
He never imagined that he could make his teaching professionsuch

tight-lipped
沉默，缄默   
例句：
The company spokesperson remained tight-lipped about the arrangement for the takeover, and she refused to give out any information.
公司发言人对兼并一事的安排保持沉默，她拒绝提供任何信息。
take to one's heels
逃之夭夭
   
例句：
When police arrived, the thieves h

mindmapping
心理测定  
例句：
Mindmapping was an important part of the weekend course.
周末讲习班的一个重要内容就是心理测定。
have other fish to fry
有别的事要做
例句：
I'm sure Rose won't go to the picnic because she has other fish to fry.
我肯定露丝不会去野餐的，她有别的事要做。
Whatever you think is fine with m

pre-loved
二手货  
例句：
Tom runs a pre-loved clothing shop. The dresses he sells are all designer clothes, but they are much cheaper than they would be if they were new.
汤姆经营一家二手服装店，卖的都是名牌服装，但价格却远远低于新货价格。
tighten one's belt
节衣缩食；紧缩开支
   
例句：
If you want to salt away money, y

add-on
附赠品，附加优惠 
例句：
The cost of the holiday tour to Hawaii included six nights' stay at a hotel, but as an add-on, every extra night was available at a discount.
去夏威夷度假旅行的费用中包括六个晚上的旅馆住宿费，不过作为附加优惠，每多住一晚，其费用可以打折。
put...into effect
生效
   
例句：
The contract will be put into

benchmark
基准   
例句：
The new fast computer is now the benchmark in the computer industry.
这种新型快速计算机已经成为计算机工业的基准了。
fall on deaf ears
未被理睬，未受到重视
例句：
She would feel heart-broken if she knew that her advice to you had fallen on deaf ears.
如果她知道你把她的忠告当成耳旁风，她会很伤心的。
I