查询词典 if and only if

For example, consider the following small problem: You have a list of numbers and a string of characters; you would like to construct a list of all pairs that consist of a number from the list and a character from the string, but only if the ASCII ordinal is larger than the number.

比如，考虑下面这个简单的问题：你有一个由数字组成的列表和一个由字符组成的字符串；你要构建另一个列表，它的元素就是列表中一个数字和字符串中一个字符的配对，而这个字符的 ASCII 码必须比这给数字大。

Furthermore, Ptychidio distinctly differed in osteological characters from other genera of Labeoninae, so it wasn't chosen as taxon of ingroup in phylogeny of Labeoninae. And Ptychidio's phylogenetic status can be ascertained only if more taxons of Cyprinidae be chosen and phylogeny of Cyprininae be solved in further research and molecular research.

此外，在特征分析时发现，卷口鱼属同野鲮亚科其它属的骨骼特征相差甚远，所以在分支系统学分析时没有被选择，有关其分类地位的确立，有待于今后在鲤科分支系统学研究中和分子生物学资料的研究中解决。

The load characteristic and control objective of parallel resonance converter is analyzed, and the conclusion that it can work on the safe side only if it works under the state of capacitive and rough resonance is drawn.

分析了并联谐振逆变器的负载特性及控制目标，通过对并联型谐振逆变器各种工作状态的分析，得出其必须工作在容性近谐振状态下才是安全可靠的结论。

If we only judge from the commercial point of view, NA me you to judge the commercial risks to the commercial banks to choose, because I can do each and every project and every risk assessment, NA me today to do so is paternalistic.

如果我们的法官只有从商业的角度考虑，那我说，你来判断的商业风险的商业银行的选择，因为我能做到每一个项目的每一个风险评估，那我今天这样做是家长式的。

And yet if you were to look at the skin and into the eyes of ascending humans gaining such weight,one would see only vibrant energy and a peachy to blushed skin tone.

但如果你去看重量增加很多的提升人类的皮肤或眼睛，你只会看到振动的能量和桃红色粉嫩的皮肤基调。

Though analysies for the big-brand strategies used in digital audio-visual industry and the comparasion between the advantages and disadvantages of China small enterprises ,this article indicated that only if small enterprises insist on big-brand strategies and put them into practise when they stand up beween othr enterprises they can get some place for long-term profitability development.

本文通过对品牌战略的分析，运用在视听数码产业上，通过具体分析我国小企业现存的优缺点来阐明小企业要想在视听数码产业中获得一席之地并长期的获利发展，就要在开始进入时坚持发展品牌战略并付诸实践。

So this is a piece of data the programme will have to take into account: Belindo doesn't knife but prefers to strangle; and he can't be strangled; only if threatened with a gun can he be tied up and gagged; once tied up and gagged anything can happen to him, he can even be raped, by the ruttish widow, or the impassive model, or the eccentric youth.

所以这个程序必须考虑以下数据问题：比起刀子来，贝林多更倾向于勒杀，他也不可能被人扼死。除非有人持械威胁，他不会被捆绑箝口；而一旦被绑住，他甚至可能被人强暴，如贪欲的寡妇，冷漠的模特，或者古怪的年轻人。

Only if there are sufficient evidences to prove fraud through letter of credit and the bank has not yet paid in a reasonable period, the people's court may order stop payment according to the request of the applicants and on condition that they provide guarantee or security.

只有在有充分的证据证明信用证项下存在欺诈，且银行在合理的时间内尚未对外付款的情况下，人民法院才可以根据开证申请人的请求，并在其提供担保的情况下裁定止付信用证项下款项。

But only if using financial theory does the thesis seem comparatively scattered and lack systematicness and depth.

然而仅从财务的角度会显得零散，缺乏系统性和深邃性。

For instance your website is to do star God website, then you can find a few bright asterism to send the ad that sends your website and link, if without giving thought to the word of the tousle of thirty-seven thousand one hundred and ninety-one, not only good without promotion, still meet be kicked very quickly.

比如你的网站是做明星偶像网站，那你可以找到一些明星群发发你网站的广告和链接，如果不管三七二十一的乱发的话，不光没有推广好，还会很快被人踢。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。