National Society of Art Directors国家社会的艺术导演 National Softball Association of the Deaf国家垒球协会的充耳不闻 Net Sales After Discounts网上销售后折扣 Network Security Architecture and Design网络安全体系结构和设计 New School of Architecture and Design (San Diego, CA)新学校的建筑和设计(圣地亚哥,CA) Norwich School of Art and Design (Norwich, Norfolk, UK)诺维奇的艺术学校设计(诺维奇、诺福克,英国) No sign of significant disease没有迹象表明重大疾病 no signs of acute disease无急性病征兆,无急病体征