Thoughfull details are unknown, some U.S.physicists familiar with the Western-style reactors say they are probably nomore dangerous than several now used in Florida.

尽管并不知道所有的细节，但是一些熟悉西方反应堆的美国物理学家说，这些反应堆的安全程度跟现在安置在佛罗里达州的几座反应堆基本相当。

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At the outset of the project, the details of how the project is going to be completed are typically unknown.

项目开始时，项目如何完成的细节通常是未知的。

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The exact details of this “supplementary” human genome are, however, unknown.

然而，人类基因的“补充部分”的具体情况现在还处于未知状态。

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Details are unknown but cardiac arrest, major stroke and serious road crashes would all fall into this category.

BBC: Ambulances parked outside Norfolk and Norwich Hospital

Exact details of the deal are unknown because FCC officials and company lawyers are still working them out.

WSJ: FCC Commissioners Will Approve XM-Sirius Deal

Plus, there are plenty of details still unknown in the L.A.-Farmers deal, aside from the general uncertainty over whether the stadium even gets built.

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