Correct Answer is.......

來源: MNR 於 2009-02-13 08:51:52 [] [舊帖] [給我悄悄話] 閱讀數 : (84 bytes)

that is a friendly sign to let you know that you are in a safe distance to merge in.

所有跟帖： 

• 有道理，謝謝 -講不清- ♀ 給 講不清 發送悄悄話 講不清 的博客首頁 (0 bytes) () 02/13/2009 postreply 09:05:54

• I don't think so. -gpyang- ♂ 給 gpyang 發送悄悄話 (0 bytes) () 02/13/2009 postreply 10:07:37

請您先登陸，再發跟帖！