development key发展重点developmentn.发展；开发；生长；进展；[摄]显影；新开发区development actuality发展现状development direction发展方向Development education养成教育development of muscle使肌肉发达development - areas开发区Development of Cities城市发展development management发展管理Development situations发展研究现状development difference发展差异developmental tendency发展趋势