Eclipses can bring strain, and sometimes show up latent problems that need to be fixed.
日食可以带来压力，有时出现潜在的问题，需要加以修正。
The results of regressive tests of GPV wild strain showed that latent period was8d, lasting1~3d after infected, and lethal rate was100%.
回归试验结果表明，该GPV野毒株的感染潜伏期为8天，病程为1～3天，致死率达100%；
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