谁能告诉我英语中的从句到底是什么意思？谢谢。

Clone The cloning technology is one of the hottest topics in few years, even though now days, cloning is also still cannot be spreaded, the most important reason is that most of people cannot accept any new life born in an unusual way and without clear parents in ethical , I cannot accept it too, I cannot immagine that if there is a baby and my parents tell me "look, it is you!" But on the other hand ,we can use the cloning technology to save the in danger animals to keep the balance of the ecosystem . And cloning also can use to produce man-made humen organs for humen's diseases. But cloning also have some disadvantages, as we know, it will lead the DNA get out of control, so the cloning lifes also have very serious ills, and most of them will die soon. Anyway , nothing is perfect, maybe cloning technology will improve our life quality in the future.

First notebook entry: Introducing myself I‘m a chinese student ，I want to learn English, because English is useful,and I want to make friends with a foreigner, to know some different things.Thanks.