You know I can't smile without youI can't smile without youI can't laugh and I can't singI'm finding it hard to do anything You see I feel sad when you're sadI feel glad when you're gladIf you only knew what I'm going throughI just can't smile without youYou came along just like a songAnd brighten my dayWho double leave that you were part of a dreamNow it all seems light years awayAnd now you know I can't smile without youI can't smile without youI can't laugh and I can't singI'm finding it hard to do anythingYou see I feel sad when you're sadI feel glad when you're gladIf you only knew what I'm going throughI just can't smileNow some people say happiness takes so very long to findWell这些都是什么意思啊!