Total benefits minus total cost --- net benefit.

Economic surplus is the difference between total gain and total cost of undertaking an action.

所以， 我认为 net benefit 就是 economic surplus.

至于marginal benefits 和 marginal utility， utility is defined as happiness.因此，两者可以等同。

现在还有最后一题没人回答....

忘了说明一下，每题我将对三个人进行奖励。因此....

以下是引用dellonhwang在2008-4-1 12:44:00的发言：
poll buddy,貌似双人参与的运动，双打？[em06][em06]

不对。

Hint: 一种运动，室内玩的。

[此贴子已经被作者于2008-4-4 18:27:06编辑过]

poll buddy 是台球吗？

poll意思是答对了，但没有答出buddy的意思，没答全。

已奖励，金+10，经验+10

[此贴子已经被叮叮当当于2008-4-4 18:46:02编辑过]

不是，给一个例子好了，

e.g.

Oh, I really like play poll, actually, I am a poll buddy.

现在你肯定懂了，感谢参与！

接下来，

1) what's the meaning of bail-out?

eg: bosses should pay for bail-out.

2) which place has over 1,400 people move every week?

3) which word can be used to describe "creating opportunities for students"?

I am not very sure, but I will try my best:

(1) 'Bail-out' means to abandon a project or enterprise.

so if you say: Bosses should pay for bail-out, it might mean that bosses should be respnosible for any losses by abandoning a project or enterprise.

(2) Sydney, I supposed.

(3) grant?

[此贴子已经被作者于2008-6-12 21:00:09编辑过]

[Q] From Ian Woofenden, USA: “How about a segment on the phrase bail out, meaning to escape from some difficult situation? I'm guessing it is spelled that way, but I don't know why. I wonder if it was originally used for leaving an aircraft before landing, or if there is some other origin.”

[A] Presumably you’re in part unsure whether it’s bail out or bale out? In this, you join lots of other people who are unsure when to use which spelling in several of the senses of both words. Is it a bale of hay, or example, or a bail? Do you bail water out of the bottom of a boat, or do you bale it? You can easily find examples of both spellings in both these senses. When you’re referring to an emergency exit from an aircraft by parachute, or the sense you give, the position is even more complicated, because British and American usage differs.

Let’s clear the ground a bit. Bale is the correct spelling when we’re referring to a large bound parcel or closely pressed package of some substance, such as cotton, hay or paper. This comes ultimately from an old Germanic word that’s related to ball. On the other hand, when we’re clearing water from the bottom of a boat, we correctly bail it out, from French baille, a bucket. And if we’re speaking of the temporary release of a person from prison while awaiting trial, that’s bail, too, but it comes from yet a different source, an Old French word meaning custody or jurisdiction, itself from Latin bajulare, to bear a burden: when someone bails a person from prison, he’s taking on the responsibility of ensuring that the accused person will turn up for his trial. Among other senses, British readers will know that the crosspieces bridging the stumps in cricket are also called bails; this is from the Old French baile, meaning a palisade or enclosure, perhaps from Latin baculum, a rod or stick. The common figurative sense of getting somebody or something out of trouble (“the government had bailed the company out with the equivalent of 2.7 billion euros in aid”) most probably comes from the legal sense, since it usually involves paying over money.

And that hasn’t exhausted the various senses of the two words by any means. No wonder people get confused.

There’s little doubt in anybody’s mind about the legal or cricket senses: both are always bail. There’s more confusion about the “tote that bale” and “bail that boat” senses, though dictionaries are clear those spellings are the correct ones. The aircraft one is rather more of a problem, perhaps because its connection with the other senses is less than obvious. There’s little doubt from the early evidence that aviators were thinking that telling the crew to escape from an aircraft in danger was like bailing water out of a boat, the important image being that of throwing the water over the side. For example, Eric Partridge, in A Dictionary of Forces’ Slang, published in 1948, gives this as the origin. However, to muddy the waters still further, he spells the term as bale out. The Oxford English Dictionary concurs in that spelling, and suggests that people may have been influenced in spelling it that way by the image of an escaping airman being a bale or bundle thrown through the aircraft door. (Or could it be that the parachute itself was viewed as such a bundle?)

The current position is that when the idea concerns escaping from some potentially difficult situation, American English virtually always uses bail out, perhaps under the influence of the legal sense of bail. British English seems to be divided about 50:50 between that and bale out, and it’s easy to find examples of baled out in the English press: “Von Brauchitsch threw the steering wheel out of the car and baled out” (Independent, 18 Feb. 2003); “‘He was heading for a stone wall and I didn’t fancy jumping that so I baled out,’ he said after the horse had been caught and returned safely” (Daily Telegraph, 11 Feb. 2004). Most, but not all, British dictionaries give this form either as the main one or an acceptable alternative.

Bosses should pay for bail-outs

看晕了，学习。。。

[此贴子已经被作者于2008-10-3 9:38:19编辑过]

最近形容美国的经济， wall street，网站上用了很多bail-outs 呢。

net benefit 不等同于 economic surplus！

Marginal benefit 不是 Marginal utility 的意思！Marginal utility 是边际效用啊！

 poll buddy 是双打的意思啊

buddy是朋友的意思，pool是桌球的意思，pool buddy是桌球爱好者。

3) which word can be used to describe "creating opportunities for students"?

is that "equip"

bail (out): to resign or leave

bail (out) on someone: to abandon someone