我发回帖之前查了OALD, Cambridge, MacMillan, Longman, 都没有连词的用法(当然,副词都是有的),所以才敢发。
如果也查了牛津的全版字典,就不会发了。
http://www.macmillandictionary.com/search/american/?q=notwithstanding
http://www.oxfordlearnersdictionaries.com/definition/english/notwithstanding_1?q=notwithstanding
http://dictionary.cambridge.org/dictionary/english/notwithstanding
http://www.ldoceonline.com/dictionary/notwithstanding