The different structures are related with specific difference and living environment. And it is also the accustomization for environment.

这种结构上的差异与种的特异性及其生存环境密切相关，卵壳的结构差异是鸟类对环境的一种适应。

ConclusionThe scientific and reasonable strategy of accustomization ensure the lower rates of positive for AMS scores in this altitude training.

结论本次外训习服策略安排科学合理，确保了相对较低的AMS评分阳性率。