短语词组短語weak -tie source 弱連帶來源weak tie line 弱聯絡線weak tie theory 理論strength of weak tie 文中提出了弱連帶力量Weak Tie Strength 弱關系力量The Strength of Weak Tie 泛泛之交優勢strong -weak tie theory 強弱連帶理論 返回 weak tie