The way events have unfolded over the past few months simply has no precedent.
过去几个月中事情的演变方式就前所未有。
The new 600MW air-refrigeration turbine have greatly improved on the structure, at present, there is no domestic precedent on the assembly .
新一代600MW空冷机组在结构上做了很大改进，其装配在国内尚无先例。
Since there is no precedent to build such a complex and unique country as China, we have to do it by trial and error.
建设中国这样一个独特而复杂的大国，我们没有现成的套路，只能边试边干。
Since there is no precedent to build such a complex and unique country as China, we have to do it by trial and error.
建设中国这样一个独特而复杂的大国，我们没有现成的套路，只能边试边干。
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