NAabbr.无名麻醉剂(=Narcotics Anonymous)abbr.全国科学院会员（=National Academician）abbr.全国科学院(=National Academy)abbr.北美（=North America）abbr.不适用的（=Not Applicable）navign.导航(航行学；航舶总称)

1. Prime Minister Yasuhiro Nakasone unveiled a long awaited three-year plan to ease import restrictions.
   中曾根首相宣布了一个人们等待已久的放宽进口限制的三年计划。