examples of technology

POSITIVE:
Air-conditioner, Computer, Internet, Electricity, Light Bulb, Optical Development, Spaceship, Transportation Network, High-rise Building

NEGATIVE:
Nuclear Weapons, Pollution from vehicles, from generation of electricity


2006-11-12 22:58:29 補充：
其實唔知你問咩, 可否詳細d?

computer
lift
air conditioner...