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And subsequently germanium tetrachloride 88 was synthesized and measured to be 1.88.
随后，四氯化锗被合成出来了,密度测量出是1。
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Because... you have to make these like, synthesized chemicals.
因为，你必须制作这些合成化学品。
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People have done experiments through the ages, and they've accumulated the knowledge from these experiments, and they've synthesized these experiments into a few basic empirical rules, empirical laws, which are the laws of thermodynamics.
很长的时期内，人们做了大量的实验，从这些实验中积累知识,将这些实验总结成一些基本的经验法则和定律，这就是热力学的定律,然后，人们给这些定律添加，数学架构。
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They're synthesized, they're packaged into vesicles, and then they're just waiting.
神经递质不断合成 包装进小泡中,时刻准备着
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In fact, people do consume foods with cholesterol, but most of the cholesterol in the body is synthesized from foods that don't have cholesterol itself but have fat that the body turns into cholesterol.
实际上,尽管人们食用含胆固醇的食物,但人体内大多的胆固醇都是由,本身不含胆固醇的食物的脂肪,转化合成而来的
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These junctions, these red dots here are actually made up of proteins, some are synthesized by one cell, some are synthesized by each other, and they lock together to form a very tight barrier, to form a tight junction between the two cells.
这些红点表示细胞连接,实际上是由蛋白质构成的,有些是由一个细胞单独生成的,有些是由两个细胞共同生成,使这两个细胞紧锁在一起形成紧密的屏障,并在两细胞间形成紧密连接
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In some cells they're recycled, that is the cell is able to take up the neurotransmitter after it's released and restore it, but most often there are enzyme systems inside the pre-synaptic membrane where those neurotransmitters are synthesized.
在一些细胞中神经递质可以循环利用,这些细胞可以吸收,已经释放出的神经递质并重新储存起来,但更常见的是突触前膜中含有酶系统,在此合成神经递质
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If the DNA is synthesized exactly correctly, so each one gets the right copies of DNA, what other differences could there be?
如果DNA的合成精确无误,每个子细胞都有一套相同的DNA,那会有什么其他的不同点呢
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So before a cell enters mitosis it has to have synthesized its DNA so it has two copies of all of its chromosomes.
所以在进入有丝分裂之前,细胞必须先合成DNA,所以它含有两套染色体拷贝
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