development system - a computer system with hardware and software that supports efficient development of applications for a particular computer; often includes design and debugging aids, emulators, editors, assemblers, and compilers;
дс тдрлими цюлютдажкию дроемжки аиакиохдйис лидр
http://www.harcourt.com/dictionary/def/2/9/3/8/2938000.html;