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To take just one example, consider the set theorist's axiom of extensionality : For any sets A and B , if A and B have the same members, then A is the same set as B .

举例说，考虑集合论的外延公理：对任何集合A和B，如果A和B有相同的成员，那么A作为集合和B同一。

Tested approaches where background reflectance is described as a n-degree polynomial in wavelength, resulting in a second degree polynomial (n=2) for the O2-A band, while a higher degree polynomial (n=6) was necessary for the O2-B band, as tested over a large database of many possible combinations of r and F cases.

测试(2009)方法在背景反射被描述为一个n-degree 多项式的波长，导致了第二学位多项式(n = 2)，而O2-A乐队更高程度的多项式(n = 6)是必要的，O2-B乐队测试在大型数据库的吗许多可能的组合和F的病例。

Any such securities offering will be a separate and independent offering and will not be conditional upon the a share offering.

工行除a股外任何其他证券的发行都是分别并独立于本次a股发行的、并不以本次a股发行为条件。

After Harrison Ford's first performance as a hotel bellhop in the film Dead Heat on a Merry-Go-Round, the studio vice-president called him in to his office."Sit down kid," the studio head said, I want to tell you a story. The first time Tony Curtis was ever in a movie he delivered a bag of groceries.

当Harrison Ford第一次在 Dead Heat on a Merry-Go-Round出演一名旅店侍者后，工作室的副主席把他叫到了办公室"孩子坐下吧"，这位工作室的头说，"我想给你讲一个故事，当Tony Curtis第一次出现在镜头前时，他是在运一包货物，我们看了他一眼就知道这个人将是个电影名星。"

Beta-carotene is also known as pro-vitamin A because it can be converted into vitamin A when additional levels are required.

beta；-胡萝卜素也被称为是维生素 A 的前体，这是因为如果体内需要更多的维生素 A 时，它可以转变为维生素 A 。

A:why? B:They have a dog. A: Did it make a big noise?

B：我的邻居有只狗 A：它弄出很大的声音？

Let F be a bijection from set A to set B. Denote M={a Aa F}. If in a theory that ME B is legitimate, then the question m E M?

令F是从集合A到集合B的双射，记M＝aAaF，如果在某个理论中M B是合法的则问题m M？

First, select column A in its entirety by clicking the letter A at the column head, and then select Insert Columns to insert a blank column. Click in cell A2 (skipping A1 because B1 is a heading), and enter this formula

首先，点击列标题栏中的字母A，选中A列整列，然后选择插入》插入列插入一个空白列，点击A2单元格（跳过A1单元格，因为B1是标题）输入下面的公式

Her skirt is trim, A-line, and ankle length. Her matching jacket is hip length with a notched collar, nipped in slightly at the waist. Her blouse is plain, her belt wide; her hat is a straw boater pinned upon one side, like a Musketeer.

她的裙子上窄下宽呈A字型，长度仅及脚踝，她搭配的短上衣刚好遮住臀部，并在腰部位置稍微收紧，衣领则是大大外翻的；她的衬衣式样简明，她的腰带宽阔；她还戴着一顶斜别向一边的硬草帽，看起来十足一个火枪手。

Her skirt is trim, A-line, and ankle length. Her matching jacketis hip length with a notched collar, nipped in slightly at the waist.Her blouse is plain, her belt wide; her hat is a straw boater pinnedupon one side, like a Musketeer.

她的裙子上窄下宽呈A字型，长度仅及脚踝，她搭配的短上衣刚好遮住臀部，并在腰部位置稍微收紧，衣领则是大大外翻的；她的衬衣式样简明，她的腰带宽阔；她还戴着一顶斜别向一边的硬草帽，看起来十足一个火枪手。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。