Muscle stem cells - which multiply to form other muscle cells - are taken from an animal such as a cow or pig in a relatively simple procedure which avoids the need to kill or seriously harm it.
肌肉干细胞——可通过培育形成其它肌肉细胞——是通过一个相对简单的手术从诸如奶牛或猪之类的动物上身提取出来的，而不必去杀死或严重伤害这些动物。
When I'm back, I'll kill the pig to make a meal for you.
妈妈去了就回来，一回来就杀猪给你吃。
To kill a good pig, Fried meat, a good son to the father and mother while eating side, said: "father and mother, I wish you learn in school to do an honest and trustworthy."
杀好猪，炒好肉，儿子一边吃一边对爹娘说：“爹娘，我要向你们学习，做一个诚实守信的好孩子。”
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