And that,he says, could require at least three more years of research to reach the point of testing in people.
VOA: special.2009.03.04
And they do it for three more.
再每人帮助三个人。
But, if you look more carefully, you will find that this is a blend of three different forms of carbon.
但是,如果你们再认真一点,会发现,它是三种形式的碳的混合物。
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