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.
从1991年3月到1993年3月，第三阶段的重点是对这些活动做精细的改进并且使其制度化。
Phase III, from March 1991 to March 1993, focused on the refinement and institutionalization of these activities.
明斯基将该过程划分为三阶段。
TCP使用三阶段握手建立连接。
会谈可望很快进入第三阶段。
He says the talks will hopefully soon move into a third phase.
此过程分三阶段。
表8：变化开端第三阶段的重要项目活动。
Table 8: Essential project activities in the third phase of a change initiative.
第三阶段，“我一直认为这是个好主意。”
国家电网公司制定了一个有三阶段的办法。
有人说只有这第三阶段的写作才是真正的写作。
Some people hold that only this third stage is really writing.
表9:变化开端第三阶段的集中化基础架构活动
Table 9: Centralized infrastructure activities in the third phase of a change initiative
好，第三阶段。
但从第二到第三阶段的过渡是同样重要的，不应该被忽略。
But the transition from the second to the third is equally important, and should not be forgotten.
在怀孕的第二第三阶段，体重增加相对最初阶段变得稳定。
Weight gain during the second and third trimesters of pregnancy is going to be more steady after the first trimester.
当我们开始掌握一些对新文化的了解时，就进入了第三阶段。
The third stage is characterized by gaining some understanding of the new culture.
第三阶段是最恶劣的，我想说，多数公司不会经历这一阶段。
The third phrase is the ugliest. I'd like to say that most companies won't go through it.
这一说法可能失之偏颇，但成功的写作是必须达到这第三阶段的。
This may be too biased. Writers, however, have to reach the third stage in order to be successful.
第三阶段的睡眠，即动眼睡眠，能够帮助记忆那些白天学到的东西。
The third phase of sleep, REM sleep, is known to promote memory retention of learning that took place during the day.
在第三阶段，用更具体的关系来修改这些将存在于不同表的实体间的概念。
In the third phase, you modify the concepts with more specific relationships that will exist between entities in the various tables.
最后，在rc .boot的第三阶段，从磁盘执行实际的init进程。
In the third and final section of rc.boot, the actual init process is executed from disk.
其第三阶段试验之一，仍须行之两载以上，彼研究之策更增医生及数百之患者。
Phase III trial, in which the methodology is extended to many more therapists and several hundred patients, is still more than two years away.
其第三阶段试验之一，仍须行之两载以上，彼研究之策更增医生及数百之患者。
A Phase III trial, in which the methodology is extended to many more therapists and several hundred patients, is still more than two years away.
北京奥运第三阶段门票今早9时正式开售，门票共138万张涉及244个场次。
A total of 1.38m tickets for 244 events are on offer in the third round of domestic ticket sales for the Beijing Olympics starting from 9am Monday.
它是通过将两阶段的引导加载程序转换成三阶段的引导加载程序来实现这项功能的。
It does this by making the two-stage boot loader into a three-stage boot loader.
然后，我们就可以做好准备，迎接本轮黄金大牛市的第三阶段——而且也是最后阶段。
Then, we will be ready for the third and final stage of this great bull market.
然后，我们就可以做好准备，迎接本轮黄金大牛市的第三阶段——而且也是最后阶段。
Then, we will be ready for the third and final stage of this great bull market.
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