The fresh air is sucked through fan and then filtered through primary,secondary and high efficiency.
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Mongolia: making mental health care available through primary health care.
蒙古:通过初级卫生保健提供精神卫生保健。
Secondary storage meets computer users' need for far greater storage capacity than is available through primary storage.
辅助存储器满足了计算机用户需要比初级存储器存储更多数据的需求。
Provide specialist supervision for both the delivery and planning of mental health services through primary care and community care.
为通过初级保健和社区关怀实施和计划精神卫生服务提供专家监督。
So, every time you're exposed to a new vaccine or a new antigen you go through this primary response before you have the secondary response.
所以,每当你接触到新疫苗或是新抗原,在再次免疫之前,机体将会经历这样的初次免疫过程
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