So here I am standing all aloneHere I am waiting just for you 什么意思

为什么英语句子中的单词后面或前面加撇?比如：but i'm tired of holdin' this inside my head 中的holdin'和i'm standin' here中的standin'以及droppin' so quickly中的droppin'为什么加撇? so here I am standing all alone so here i am standing all alone So here I am standing all alone的中文So here I am standing all alone 英语翻译so here i am standing all alone ,here i am waiting just for you you just saying it ,I am so outta here I am glad to meet so many ___ here?visitvisitervisitorvisito So here I am waiting just for you的中文So here I am waiting just for you So here I am standing all aloneHere I am waiting just for you 什么意思 I AM HERE怎么样 i am here ,as here i am中文歌词 i am here是什么意思 I am new here I am here i am here I am here now why am i here?