Children’s main job is to figure out how their complex world works. In order to master the things they need to at each developmental level they will test their parents.
孩子会主动学习这个复杂世界的法则，在不同的发育阶段，他们都会为作出各种尝试，以了解这些法则。
Since most of the flying at this stage of the F-22 program concerns developmental tests why does the F-22 CTF need an operational test pilot?
既然F-22项目现阶段最为关注的内容是研发试飞，为什么F-22综合测试大队会需要战斗试飞员呢？
However, whether the embryos have full developmental potential need to carry out follow-up experiment, such as embryo transfer can be confirmed.
但该胚胎是否具有完全的发育潜能，尚需进行胚胎移植等后续实验才能证实。
Since most of the flying at this stage of the F-22 program concerns developmental tests, why does the F-22 CTF need an operational test pilot?
既然F - 22项目现阶段最为关注的内容是研发试飞，为什么F - 22分析测试大队会需求斗争奋战试飞员呢？
Since most of the flying at this stage of the F-22 program concerns developmental tests, why does the F-22 CTF need an operational test pilot?
既然F - 22项目现阶段最为关注的内容是研发试飞，为什么F - 22分析测试大队会需求斗争奋战试飞员呢？
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