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They become part of us, and the rest get - we get rid of and they remain part of the outside world.
使其成为身体的一部分,而排出剩下的部分,它们仍然是外界的一部分
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It's these cells that are sitting at the surface here that are responsible for determining what becomes part of us and what stays outside.
位于肠道表面的细胞,决定了,吸收哪些分子而排出哪些分子
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The guys who are famous are the generals who get credit for putting together a nice formation when it's not the simple one I've just given you.
出名的是指挥官,他们是因为能排出精妙的阵型,而不是我摆的这个简单方阵而闻名的
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By the way, I have another speaker who told me that he would like to talk to our class and I hope we can work it out.
顺便,还有一位嘉宾和我说,他有兴趣来讲一堂课,希望能排出时间
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And what an agonist does is increases the effect of neurotransmitters, either by making more neurotransmitters or stopping the cleanup of neurotransmitters, or in some cases by faking a neurotransmitter, by mimicking its effects.
兴奋剂会增加神经递质的作用效果,有可能是通过释放更多的神经递质而实现,也可能是通过阻止神经递质的排出而实现,也有时候是通过伪造神经递质,通过模仿神经递质的效果来实现的
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The water soluble vitamins tend to be used more immediately by the body not stored and excreted through the urine if consumed in excess, so the body can tolerate more variation in intake of these before you start getting toxicity than is the case with the vitamins on the right.
而水溶性维生素往往都立刻被身体所利用,不会被机体储藏,过剩部分由尿液排出,因此机体耐受过量水溶性维生素的能力,相比起右边这栏里的脂溶性维生素,可是要强得多了
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By determining how many of those molecules to hold onto, how many to keep in the body, how many to release determines the internal composition with regard to that ion.
通过控制体内这些分子的水平,即体内保有多少,又排出多少,就能够保证内环境中离子组成的稳定
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The amount of water that you need to have the optimal sort of concentrations of things is determined by how much urine your kidneys produce and how much they excrete each day.
为了保持体内物质的理想浓度,所需的水量,取决于肾脏每天产生,以及排出体外的尿量
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The main goal of the respiratory system is to bring fresh in so that you can extract oxygen from it, and blow used air out so that you can rid of carbon dioxide which is the end product of carbon metabolism inside our bodies.
呼吸系统的主要功能是,吸入新鲜空气,以便获得空气中的氧气,呼出废气,以便排出二氧化碳,二氧化碳是人体内碳代谢的终产物
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