假設你想轉貼的連結是這個 http://www.youtube.com/watch?v=y4H-znB9huQ&feature=fvst &feature=fvst可刪除 http://www.youtube.com/watch?v=y4H-znB9huQ 取最後面的y4H-znB9huQ y4H-znB9huQ :)