As they began to settle, grow plants and herd animals, the need for a sophisticated number system became paramount.

当他们开始定居、种植作物和饲养动物时，他们对复杂数字系统的需求变大。

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In arid and semiarid regions, on the other hand, the small number of lakes and the great distances between them reduce the possibilities for correlation.

另一方面，在干旱和半干旱地区，湖泊数量少，湖泊之间距离远，减少了相互关联的可能性。

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The band is labeled with a tracking number, and there is a phone number on the band for people to call for free, to report a banded bird they've found or recaptured.

这只手环上有一个追踪号码，还有一个人们可以免费拨打的电话号码，举报他们发现或捕获的标记雀鸟。

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It also urges hospitals to establish a special telephone number for medical workers and students to call if they are injured.

VOA: special.2010.02.10

So we developed a number of different ways for them to learn from each other and from the experts.

我们为他们找到了,多种互相学习,或向专家学习的方式。

麻省理工公开课 - 媒体、教育、市场课程节选

This we did set up a number of vehicles for peered appeal exchange and peered export exchange.

我们利用多种手段进行,同伴之间信息输入交流,信息输出交流。

麻省理工公开课 - 媒体、教育、市场课程节选

Genworth Financial (33, GNW) is the largest U.S. seller of long-term-care insurance and variable annuities, number four for term life and number five for mortgage insurance.

FORBES: Demographics And Destiny

Dr. SKRAPEC SYNC: Right now if there is a criminal like a serial killer or bank robber, they are able to print in the code, 'cos each face you make has a particular code, a number for the eyebrows and a number for the nostril.

BBC

Does this then begin to move consumers away from an individual account and phone number for each device and towards a single account and number that can be accessed on multiple devices?

FORBES: Larger iPhone Screen Will Be Upstaged By LG's 5-inch Full 1080p HDTV Display