呼吸系统的主要功用是提供空气到肺的通路及气体交换的场所。
The main function of the respiratory system is to provide passages and room for gaseous exchange.
供气装置是呼吸机的重要组成部分，为呼吸机提供空气氧气的混合气体。
Air supply apparatus is the important component of the respirator, which provides air and oxygen mixture to respirator.
海豚快艇的顶鳍内部埋设有一根长的通气管，这根通气管为飞艇提供空气。
Seabreacher has a long snorkel concealed within the top fin which provides an airflow into the boat.
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