关联交易作为一种经济现象应属于中性范畴，其存在有其必然性和一定合理性。

As an economic phenomenon, connected transaction belongs to neutral category, whose existence is based on inevitability and certain rationality.

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尽管参加过战争的人，其PTSD通常会表现的很正常，但是在这个国家中以及在国防部里，仍然确实存在有关的病例。

Although PTSD is perfectly normal after going to war, in this country and within the Department of Defense there still exists a certain stigma associated with it.

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并且，自然也存在有盈利模式，其基础在于：我们提供了一项服务或者一个产品，你之所以要付费是因为你喜欢它，又或者广告主会给我们支付费用，又或者是其他的津贴办法。

And of course there is the for-profit model, which basically is: we provide a service or a product and you pay us because you like it or advertisers pay us or some subsidy method.

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There are a lot of them about one thousand billion of them and each neuron can be connected to around thousands, perhaps tens of thousands, other neurons.

他们大量存在,大约有上千亿,每个神经元都和其周围上千个,甚至上万个神经元相连接

耶鲁公开课 - 心理学导论课程节选

One of the enzymes that often gets activated is an enzyme which converts ATP, a small molecule that is inside all of our cells.

在经常被激活的酶中有一种酶,其功能是转化ATP,ATP是一种,存在于所有细胞中的小分子物质

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