repetition
反复 
例句：
We must avoid the repetition of a mistake.
我们必须避免犯同样的错误。
never say die
别灰心，别气馁
例句：
Never say die. Try again and you'll probably succeed.
别灰心，再试一次，你会成功的。
What are your plans for the weekend?
你周末计划做什么？ 
对话：
A: Jack, what are your plans for the

earmark
专向拨出  
例句：
The school has decided to earmark 20 percent of its funds for book purchases.
学校决定拨出20%的经费用于购买课本。
burn one's bridges
义无返顾
 
例句：
I will be willing to burn my bridges if what I do will help change the present situation.
如果我所做的事情能有助于改变目前的情况，我将义无返顾。
Did yo

bottleneck
瓶颈；障碍 
例句：
The lack of personnel has caused a bottleneck in the shipping department.
人员缺乏已经给货运部带来了困难。
That's the way it is.
就是这么回事。
give offence
冒犯
 
例句：
If you are in the right, don't be afraid to give offence.
如果你是正确的话，就不要害怕冒犯别人。
对话：
A: D

blurb
（封面等处的）推荐性广告 
例句：
He gets a kick out of reading the blurb on cereal boxes.
他以读谷类食品包装盒上的广告为乐。
odds and ends
零星杂物
例句：
Even the odds and ends may be of use to him.
即使是零星杂物也会对他有用的。
We can get by.
我们还过得去。
对话：
A: We need more computers in our offic

blitz
突击，闪电式行动  
例句：
Every summer we usually see a new beer advertising blitz.
每年夏天我们都会看到新的啤酒广告突击行动。
nothing to speak of
不足挂齿；微不足道
例句：
He said that what he had done was nothing to speak of.
他说他所做的事情微不足道。
Make your dream come true.
让你的梦想成真。
对话：
A: Ja

blip
光点 
例句：
In today's society, most paperwork has been replaced by blips on a computer screen.
在今天的社会里，多数的案头工作已经被计算机屏幕上的光点所代替。
to say nothing of
更不必说
 
例句：
He has great wisdom, to say nothing of his engaging manners.
他智慧过人，更不必说他的翩翩风度了。
You need a sense of u

access
进入，使用     
例句：
Only authorized personnel can have access to this room.
只有得到许可的人才可以进入该房间。
be on edge
坐卧不安，十分烦躁
   
例句：
We are all on edge to know the election results.
我们都急切地想知道竞选的结果。
I can't resist the temptation.
我不能抵挡

abstract
摘要，梗概 
例句：
Jack enjoys reading abstracts more than reading the original reports and articles.
比起那些报告和文章的原文来，杰克更喜欢读它们的摘要。
in full cry against...
全力反对……；猛烈抨击……
 
例句：
Many speakers at the conference were in full cry against this proposal.
大会上许多的发言人强烈抨击了这项提案。

upbringing
教育  
例句：
She is in little doubt that the condition has a genetic base and is not caused by upbringing.
她毫不怀疑这种状况是又遗传引起的，而绝不是后天教育的结果。
count on…
依靠……；指望……
 
例句：
They are counting on selling at least 5,000 copies of this film.
他们指望着这部电影至少卖5,000个拷贝。
What's the de

offspring
后代  
例句：
The practice of rearing unrelated offspring occurs in several ant species.
只有几种蚂蚁可以抚育与自己并不相关的后代。
keep one's chin up
不气馁，不灰心
 
例句：
Keep your chin up and you still have a profusion of chances for you to improve your relationships with them.
别灰心，你还有很多机会改善

inherent
内在的，固有的，生来的  
例句：
The desire for freedom is inherent in us all.
渴望自由是我们大家生来就有的愿望。
give someone credit for…
应该给予……应有的承认
 
例句：
I gave them credit for their hospitality, thought their service was not
up to my expectation.
虽然他们的服务不及我所料，可我还是承认他们很热情。
E

inheritance
遗产  
例句：
The son received a large inheritance in his father's will.
根据他父亲的遗嘱，那个儿子得到了一大笔遗产。
knock off
迅速办理，匆匆写出
例句：
He says he can knock off a sonnet on any occasion.
他说他能在任何场合马上写出一首十四行诗。
Let's hope for the best.
让我们往好处想吧。 
对话：
A:

inherit
经遗传而得   
例句：
She inherited all her mother's beauty.
她秉承了她母亲的全部美貌。
make fun of
取笑，戏弄
 
例句：
Don't make fun of him, or he will feel offended.
别戏弄他，否则他会被激怒的。
I haven't the slightest idea.
我一点都不知道。
对话：
A: Jack and Kate quarreled this mornin

hereditary
遗传的   
例句：
While tallness is evidently a hereditary characteristic, any individual's actual height depends on the interaction between their genes and the environment.
虽然身高是一种明显的遗传特征，但是个体的实际身高则取决于基因和环境的相互作用。
in full
全部的；完整的
例句：
We shall reproduce this handbook in

gene
基因  
例句：
The geneticists were not interested in particular genes until recently.
直到最近，基因学家们才开始对特定基因感兴趣。
blunder upon…
偶然碰上……
 
例句：
Yesterday I blunder upon an old friend I hadn't seen for several years.
昨天我偶然碰上了一个几年没见面的老朋友。
Don't jump to conclusions.