实际上第二阶段测试更多地聚焦于其居民的生存研究，而非学术研究，其表现也很不错。
It wasn't a bad show for what was, in effect, a beta test focused less on academic research than the survival of its inhabitants.
第二阶段仍然是测试疫苗的安全性，但主要是检测疫苗是否有效。如果第二阶段进展顺利，疫苗研发就可以开始第三阶段。
Phase 2 still tests the vaccine's safety, but it's mainly a test to see if the vaccine seems to work. If Phase 2 goes well, the vaccine can begin Phase 3.
美军在完成第二阶段后将进行开发和有限的用户测试。
The Army will then conduct development and limited user testing at the conclusion of the second phase of this effort.
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