名词
中文翻译：气道
同义词：
['trachea', 'bronchi', 'tracheobronchial tree例句：1. The alveolar tubes are responsible for the exchange of gases between the lungs and the bloodstream.（气道负责肺部和血液之间的气体交换。）2. During sleep', 'the alveolar tubes dilate to allow more oxygen to reach the bloodstream.（在睡眠时，气道扩张以允许更多的氧气到达血液。）']
例句：
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1. The alveolar tubes are responsible for the exchange of gases between the lungs and the bloodstream.
气道负责肺部和血液之间的气体交换。
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2. During sleep, the alveolar tubes dilate to allow more oxygen to reach the bloodstream.
在睡眠时，气道扩张以允许更多的氧气到达血液。
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3. Alveolar tubes play a crucial role in the respiratory system, providing a pathway for air to enter and exit the lungs.
气道在呼吸系统中起着至关重要的作用，为空气进入和离开肺部提供了一条路径。