Prove that no four consecutive binomial coefficients can be in arithmetic progression.
证明不存在四个连续的二项系数成算术级数。
The political institutions of the four countries posed no significant barriers to industrialization or economic growth.
这四个国家的政治制度没有对工业化和经济增长设置过多的障碍。
There are no information signs in four languages on our public buildings or monuments; we do not have multilingual guided tours.
我们的公共建筑或纪念碑上没有四种语言的信息标志，我们也没有多语言的导览行程。
It's very easy to spend four years majoring in English literature and come out no more employable than you were before you went in.
花四年时间主修英国文学，到头来却发现自己并不比入学前更具有就业能力，这是很常见的。
There is literally only one job opening for every five unemployed workers, so four out of five unemployed workers have actually no chance of finding a new job.
每五个失业者只能有一个工作机会，所以五分之四的失业者没有机会找到新工作。
One in four Los Angeles teachers reported there was no time at all for "free play."
四分之一的洛杉矶教师称根本没有时间“自由玩耍”。
Quartz is quartz—a silicon ion surrounded by four oxygen ions—there's no difference at all between two-million-year-old Pleistocene quartz and Cambrian quartz created over 500 million years ago.
石英是石英——由四个氧离子围绕的硅离子——200万年前的更新世石英和5亿年前的寒武纪石英之间没有任何区别。
The Bureau of Labor Statistics data shows that 2.7 million people who wanted and were available for work hadn't looked within the last four weeks and were no longer even classified as unemployed.
劳工统计局的统计数据显示，过去的四周内，有270万想要并且可以工作的人在过去四周内没有找过工作，甚至不再被列为失业者。
The Bureau of Labor Statistics data shows that 2.7million people who wanted and were available for work hadn't looked within the last four weeks and were no longer even classified as unemployed.
劳工统计局的统计数据显示，过去的四周内，有270万想要工作且可以工作的人没有找工作，从而不再被划归成失业人员.
7 million people who wanted and were available for work hadn't looked within the last four weeks and were no longer even classified as unemployed.
在过去四周内，有700万想找工作的且能够工作人没有找到工作，他们甚至不再被列为失业者。
Treatments for chronic conditions can easily top $2,000 a month—no wonder that one in four Americans can't afford to fill their prescriptions.
慢性疾病的治疗费用可以轻易地达到每月2000美元——难怪四分之一的美国人付不起他们的医药费。
No matter what your major may be, you can expect to spend between four and six hours a week for each class attending lecture.
不管你的专业是什么，你每周每一门课程都要花4到6个小时来听课。
After four months, the patients using the computerized CBT programs had no improvement in depression levels over the patients who were only getting usual care from their doctors.
4个月后，使用计算机化认知行为治疗方法的患者的抑郁程度并没有比只接受医生常规治疗的患者有所改善。
He added, "No one who has seen the four paintings can doubt that the Cobbe portrait is the original."
他补述说，“所有见到过这四幅画的人中，没有人会怀疑，科布肖像是原始文本。”
It requires an answer in no more than four slides of text or pictures.
要求答案不超过四张由文字或图片组成的幻灯片。
My guideline is to split these components across at least two but no more than four hostnames.
我的指引，这些组件拆分至少两个但不是超过四个主机名。
It is not reasonable that such a request is handled within four hours, because no resources will be available until Monday morning.
在四个小时内处理这样的请求是不合理的，因为在星期一早上之前，将没有资源可用。
Finally I was free - no more sharing a room, no more being harassed, and best of all, no more nights of only four hours of sleep.
我终于自由了——不用再分享一个房间，不会再感到精疲力竭，而且最好的是，不会再经历只有四小时睡眠的难熬夜晚了。
It is not reasonable that such a request can be handled within four hours, because no resources will be available until Monday morning.
在四个小时内处理这样的请求是不合理的，因为在星期一早上之前，将没有资源可用。
The NHS recommends no more than three to four units a day – equivalent to less than two pints of beer.
国家健康中心建议每天饮酒不超过三至四个单位，折算不到两品脱啤酒。
It is easily treated, usually involving no more than four dental visits.
牙病很容易医治，就诊一般不会超过四次。
At length, I return to the hotel to find, for the first time in four nights, no empty champagne bottles outside my neighbors’ door.
最后，我回旅馆发现四天夜里第一次没有空瓶香槟放在邻居门口。
By 2005 Americawas a dropout, with no as or Bs, four Cs and ten Ds.
到了2005年，美国退学了—没有A和B，四个C和十个D。
Mather gave his flock no fewer than four such dates, beginning with the year 1697.
他一共提出了四个日期，第一个是1697年。
With no serious forest fire for four years, he claims Indonesia has slid down to number 15 or 20.
还说，如果四年不起大火，印尼排名将落到15或20。
In the case of Hershey, the answer appears to be no fewer than four.
对好时食品(Hershey)来说，答案看起来是不少于四个。
Cities that had no reported problems, or almost no problems, even four or five years ago, like Philadelphia, today it's gangbusters.
乃至于四到五年前，像费城这样还没有相关问题报道，或者几乎没出过问题的【美国】城市，而今的局势已经很严重。
Cities that had no reported problems, or almost no problems, even four or five years ago, like Philadelphia, today it's gangbusters.
乃至于四到五年前，像费城这样还没有相关问题报道，或者几乎没出过问题的【美国】城市，而今的局势已经很严重。
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