______________________David Willis reports.Despite being heavily criticised for its stance on gun ownership after the Newtown shootings, the National Rifle Association defeated attempts by President Obama and others to expand background checks for gun buyers and since consolidated its position as one of the most powerful pressure groups in America. But moves are afoot to reintroduce gun-control legislation and the polls continue to show the majority of Americans are in favour of some kind of reform, hence the theme of this year's NRA convention which is "stand and fight". _________________大卫`威利斯报道.纽镇枪击案发生后,尽管美国步枪协会因主张枪支所有权而饱受批评,但该协会还是挫败了奥巴马总统和其他人试图扩大对枪支购买人进行背景审查的努力,从而巩固了其作为美国最强大的压力组织的地位.但国内有关重新引进枪支管控立法的行动正在进行中,而且民意调查持续表明绝大多数美国人支持一定程度的改革,因此该协会本年度会议的主题就是"勇敢战斗".