Travelling alone is ideal for unobtrusively observing. Whether in a forest or a crowd, the single traveller can watch, listen, and learn with a minimum of disruption.
独自旅行能使你观察到不易察觉的东西。不论是在森林里还是人群中，独自旅行者都能不被打扰的用心去看，去听，去学去感受。
Objective: To investigate the mechanism of regulation on blood viscosity in hypoxia environment by observing the feature of hemorrheology in different crowd on high land.
目的：观察高原不同人群血液流变性特点，探讨低氧环境下人体血液粘度调节机制。
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