However, it is based on scientific speculation, not certainty.
然而，它却是基于科学猜测，并非出于定论。
When no one can be quite sure what is underwritten and what is not, certainty is not achieved, but the costs may be very large.
对于谁得到了担保、谁没得到担保，当没人心里有数的时候，就不会有确定性，而成本可能很大。
When no one can be quite sure what is underwritten and what is not, certainty is not achieved, but the costs may be very large.
对于谁得到了担保、谁没得到担保，当没人心里有数的时候，就不会有确定性，而成本可能很大。
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