（单词翻译:单击）
补充：
Backbone1 - A series of high-speed network connections through which other networks connect.
Bandwidth - According to Webster's: a range within a band of wavelengths2, frequencies, or energies; esp: a range of radio frequencies which is occupied by a modulated3 carrier wave, which is assigned to a service, or over which a device can operate. In Internet terms, bandwidth commonly refers to the amount of information that can be sent through a connection.
Bit - (binary digit) The smallest unit of computer information.
Browser4 - A software program that allows you to view HTML documents and navigate5 on the WWW.
Business Systems - The set of voice, data, and Internet products that provide communication solutions and services to business customers. The products usually reside within the customer's place of business.
Byte - A combination of bits that represents a single character (approximately 8 bits equal one byte).
