a closure of the larynx that blocks the passage of air to the lungs
双语例句
Water in the lungs blocks gas exchange in delicate tissues, while inhaling water also triggers the airway to seal shut - a reflex called a laryngospasm. 水进入肺里之后会阻塞毛细组织的气体交换，同时还会切断气管，造成一种叫喉肌痉挛的反应。
