What does 三声无奈 mean?
我想你因該看得懂我寫的中文

三聲無奈的意思是表示「喊了3次無奈」表示非常的無可奈何(3次並不是準確的數字只是代表很多,一個複數的概念)

參考資料：
http://yifertw.blogspot.tw/2010/10/blog-post_01.html

讀中文的詩歌呢，重點不是字義（字面上的意思）：重點在於意境（作者想傳達的感情）。



I think you should read and understand the Chinese I've written.

三聲無奈 means:


  I shouted "helpless" three times


and shows extreme helplessness (three times is also not a precise number, it's just to mean a lot, a plural concept).

I reference you to this resource:
http://yifertw.blogspot.tw/2010/10/blog-post_01.html

Reading Chinese songs, the focal point is not the meaning of the characters. The focal point is on the artistic conception (the feeling the author wanted to convey).