源始操劳活动的时间性特征在于,其当前化(making present)根植于对器具与境(context of equipment)的保持和对将来可能性的期备;而科学活动的时间性特征却在于,其当前化“唯一地期 备着...
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Other experts say glass making first started four to five thousand years ago in ancient Mesopotamia, present day Iraq and Syria.
VOA: special.2009.09.16
So, they are selling widgets or whatever and making money-- the value of the company is the present value of that cash flow.
不管通过什么方式赚钱,即便卖小商品...,公司的价值等于现金流的现值
One of the other things that MHC1 does, in addition to marking yourselves as your own, is that it's capable of making combinations with all the different molecules that are present inside the cell and expressing them on the surface, and sort of showing them to the outside world.
HC1的另一项功能,除了给你标记一个独一无二的标签以外,MHC可以和细胞内所有不同的,分子结合 使其能够呈现在细胞表面,使其暴露于外界
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