英语专业四级阅读难句讲解(3)ThisweekWal-Martissettoannounceamajorinitiativeaimedathelpingcottonfarmersgoorganic:itwillbuytransitional(过渡型的)cottonathigherprices,thushelpingtoexpandthesupplyofakeysustainablematerial.(09.6Passage1)分析主干:Wal-Martissettoannouncea(major)initiative:itwillbuy(transitional)cotton...1.本句冒号