康茂暖通
齿轮转动的声音哗啦哗啦的形容。根据查询相关资料信息，转动上了油的自行车链条一样。自己齿轮啮合不太好，那就什么声音也没有的。其实齿轮运行声音不大，主要是有油。齿轮是指轮缘上有齿轮连续啮合传递运动和动力的机械元件。齿轮在传动中的应用很早就出现了。
Mary瑶瑶
never be replaced——1st Ladi Baby I love you and i'll never let you go But if I have to boy I think that you should know All the love we make can never be erase And i promise you that you will never be replacedBaby I love you and I'll never let you go But if I have to boy I think that you should know All the love we make can never be erase And i promise you that you will never be replaced I love you yes i do I'll be with you as long as you want me too Until the end of time From the day I met you I know we've be together And now I know I wanna be with you forever I wanna marry you and i wanna have your kids Thinking never compare to feel enough to kisses I can say i'm truly happy to the same You've made me think I'll die and live my life hesitate There's never been no doubt in my mind That i'll regret ever having you by my sideBut if the day come that i'll have to let you go I think that something I should probably let you know With everything that i spent with you Then i will miss you cuz i'm happy that i have you at all Baby I love you and I'll never let you go But if I have to boy I think that you should know All the love we make can never be erase And i promise you that you will never be replaced Baby I love you and I'll never let you go But if I have to boy I think that you should know All the love we make can never be erase And i promise you that you will never be replaced I feel for you yes i do I'll be with you as long as you want me to Until the end of time 是吗
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