Language is a system that consists of the development, acquisition, maintenance and use of complex systems of communication, particularly the human ability to do so; and a language is any specific example of such a system.
EU-funded researchers unveiled a cost-effective solar cogeneration system that captures excess heat that solar cells dissipate and uses it to produce useful hot water.
EN 
CS
DE
ES
FR
HU
IT
PL
PT
РУ
SK
TR
УК
AR
中文
