It "seldom knocks twice"
click for more detailed Chinese translation, definition, pronunciation and... [DOC] [TLE] Opportunity seldom knocks twice essay - Dana Summers [PAR] Quotable Quotes -- Courtesy of The Freeman Institute -- "This telephone has too 
many shortcomings to be opportunity seldom knocks twice essay seriously... [DOC] [TLE] Opportunity Seldom Knocks Twice Quotes [PAR] ...