The properties of Bell number in proper order are studied with the use of elementary method, some identities involving the sum of product of Bell number in proper order are obtained.
利用初等方法研究了有序贝尔数的性质，给出了关于有序贝尔数的一组恒等式。
Once he was over the hump of the hill, he let the cycle glide. He slowed down on Rose Lane, found the house number, which he had memorized, and rang the bell.
一过完上坡那个最困难的路程，他就任车子自行滑动，到了罗斯小巷慢了下来，找到他记在心里的门牌号，然后按响了门铃。
While the company's financial reports were improving, a number of vehicle recalls signalled that its famed quality was slipping, and Mr. Toyoda began to sound the warning bell.
虽然丰田公司的财报有所好转，但多起车辆召回事件表明丰田的高质量声誉正在下滑，丰田章男也开始敲响警钟。
In the earlier days of online retailing, Bell notes, companies overestimated the value of "eyeballs," or the number of visits consumers made to a site.
Bell注意到，早期的在线商店都过分重视“点击率”，或者说网站的访问量。
In any organisation there's a bell curve of people's abilities, and we know that a small but significant number of people will be at the wrong end of it.
在任何组织中，人们能力总是会构成一条钟形曲线[注1]，我们知道有少数非常杰出的人会被错误对待，导致他们处于钟形曲线错误的一端。
Yum China, the company behind KFC there, last month opened the first Taco Bell in China in years, and says it plans to open an unspecified number more.
中国的肯德基餐厅所属的百胜中国公司上个月在中国开了这里数年来的第一家塔可贝尔餐厅，并表示计划开设多家，但没有透露具体数目。
That settled, the number of chapels, doors, bell towers, and pinnacles are modified to infinity, according to the fancy of the century, the people, and art.
这样假定后，小祭台、门拱、钟楼、尖塔的数目多少，那是根据世代、民族、艺术的奇思异想而。
They landed with their bell shaped scout craft, which type was sighted on a number of other occasions.
他们降落了钟形的小型侦查飞船，这种样式的飞船也在其他的场合被见证过。
[bell ringing] corn griffin, the number two contender in the world..
寇？格里芬，世界上的第二号种子选手。
Number 7. BELL AH-1 COBRA is a two-blade, single engine attack helicopter manufactured by Bell Helicopter.
第七名：贝尔的AH-1眼镜蛇是由贝尔直升机公司制造的双叶片，单发动机攻击直升机。
Number 8. BELL UH-1 IROQUOIS (HUEY) is a military helicopter powered by a single turboshaft engine, with a two-bladed main rotor and tail rotor.
第八名：贝尔uh - 1IROQUOIS(惠)是一种军用直升机搭载单涡轮轴发动机，具有双桨叶主旋翼和尾桨。
Number 8. BELL UH-1 IROQUOIS (HUEY) is a military helicopter powered by a single turboshaft engine, with a two-bladed main rotor and tail rotor.
第八名：贝尔uh - 1IROQUOIS(惠)是一种军用直升机搭载单涡轮轴发动机，具有双桨叶主旋翼和尾桨。
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