查询词典 if and only if

Oh and if you want to talk statistics the fact that there were 3 English teams in the semis and only one Italian side tells you that 75% of the semi finalists were English. See u in Athens on the 23rd, and remember to bring a box of tissues and a bunch of sour grapes.

哦，如果你想要探讨统计数据的话，在半决赛中有三支英国球队和一支意大利球队的事实告诉你，75%的半决赛参加者是英国人。23日雅典见，别忘了带一盒纸巾和一串酸葡萄。

Faraday's law is that when the flux in the conductor loop changes, it produces electromotive force in the conductor loop, and obeys to contour integral law , Maxwell Curl Theory is that when the magnetic intensity of a certain point in ether space changes, there produces electric field at that point in ether space, which is the field mutual production theory of "electric field produces magnetic field and magnetic field produces electric field" in the free space which everybody is familiar with, and it obeys differential law , Lorentz magnetic force is that when metal electrons cut magnetic lines, metal electrons forced by move along the conductor to form inductive current, in fact, it doesn't matter whether coil moves or magnet moves, only if there exists relative motion between magnetic field and conductor, metal electrons must cut magnetic lines, which is,"coil stills while magnet moves to the left" and "magnet stills while coil moves to the right" these two situations are the same, which both belong to metal electrons having cut magnetic lines.

法拉第定律指导体环路里的磁通量发生变化时，在导体环路上产生电动势，而且服从围线积分律；麦克斯韦旋度理论指以太空间某点的磁场强度发生变化时，在以太空间的该点产生电场，即大家熟知的自由空间里"电场生磁场与磁场生电场"之互生场理论，而且服从微分律；洛伦兹磁力指金属电子切割磁力线时，金属电子受力沿着导体漂移而形成感应电流，其实，无论线圈运动或是磁铁运动，只要磁场与导体存在相对运动，则金属电子必然切割磁力线，即，"线圈静止而磁铁向左运动"与"磁铁静止而线圈向右运动"这两种情况是一样的，都属于金属电子切割了磁力线。

Here I may add that the concept of alteration, and with it the concept of motion, as alteration of place, is possible only through and in the representation of time; and that if this representation were not an a priori intuition, no concept, no matter what it might be, could render comprehensible the possibility of an alteration, that is, of a combination of contradictorily opposed predicates in one and the same object, for instance, the being and the not-being of one and the same thing in one and the same place.

它是那样的""它在这里，它在那里(这是运动在没有时间表达下的论述，显然是无意义的)。

Because of the internet, we can read books and newspapers without going to the bookstore and library (if you want to maintain a status of literate). Besides, we can do shopping without going to the market place, can meet friends, see prospective partners, and get married without going to see the real person (chatting on QQ, loving on line, having factious marriage on internet), and so on. Finally, we do not only care for meeting each other, we also don't care for calling or even sending short messages to others. Our life then lost the so called "communication function" or "communication necessity" by the functional linguisticians.

因为网络，读书看报不用去书店或图书馆了（假如还有几个人想维持识文断字的身份的话），购物不用去商场了，找朋友、相亲、结婚也不用真的与人见面了（QQ聊天、网恋、网络虚拟婚姻），等等，最后，人与人之间，不仅不愿见面，连电话也不打了，甚至短信也懒得发了，生存已经失去了功能语言学所说的"人际功能"或人际必要了。

Only if the curriculum reform of English education in teachers colleges and normal universities is synchronized with that in grade-school and high-school education,can it better serve elementary education and adapt itself to the needs of the social and economic development.

高师英语教育课程改革只有与中小学英语教育课程改革同步进行才能更好地服务基础教育，才能更好地适应新时代发展的需要。

Liberals argue that Americans just don't understand how unequal or unfair the economy has become, and that if they only understood how they were getting shafted, middle-Americans would take to the streets, if not the guillotine.

自由派人士则认为，美国人只是不了解美国经济已经变得多么的不平等和不公正；只要他们知道自己受到怎样的欺骗，美国中产阶级就会走上街头抗议，如果不是采取暴力行动的话。

A letter to Iran's Supreme Leader is a productive gesture only if it gets a response; if it doesn't, it seems weak and supplicatory.

写给伊朗最高领导人的信只有在得到回复的情况下才算是卓有成效的表态，否则将是胆小懦弱、摇尾乞怜的表现。

Under tipper-tippee theory, a tippee who uses the inside information for trading is liable for insider trading only if the tipper violates the fiduciary duty to the company's shareholders and if the tippee knows or should know the breach.

依据信息传递理论，当泄漏信息者违反对股东的信赖义务并且接受信息者知道或应当知道泄漏信息者违反信赖义务时，接受信息者不得利用内幕信息买卖证券。

We're likely to get about 60 absentees and if we only have 32 people on my waiting list at the moment, I would expect that if she's number 33 then she would be very likely to get a test.

我们很可能会有大概60名缺考者，目前我们如果在等候名单上就只有这32个人，我估计她很可能有机会参加考试，如果她是第33位的话。

You really only matter to a certain degree in the whole circus out there. If you take yourself seriously, you're not going to be able to move forward. You're going to be hampered by always wanting to look in the mirror and see if you have enough tuna oil on your hair or something like that.

你只是剧团里的一员，你在剧团里的影响力很有限，如果过分的执着于自己，你就没法进步；你会总想照照镜子，看头发乱了没有；这些低级举动会妨碍你的进步。

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。