Development Gap发展差距developmentn.发展；开发；生长；进展；[摄]显影；新开发区development of features特色发展development expenditure发展费用支出development of theories理论发展Developmental deviation发育性偏斜development connotation发展内涵developmental screening发育筛查developmental coxa vara发育性髋内翻Developmental prospects发展前景developmental potencies发育优势, 发育效价Development and upgrade发展升级