self-contained breathing apparatus

例句：

1. 1.The astronaut had to wear a self-contained breathing apparatus during the long space mission.
   在漫长的太空任务期间，宇航员必须佩戴自给式呼吸装置。
2. 2. The rescue team used a self-contained breathing apparatus to extract the trapped victim from the wreckage.
   救援队使用自给式呼吸装置从废墟中救出了被困的受害者。
3. 3.In emergencies, self-contained breathing apparatuses are essential for survival in confined spaces.
   在紧急情况下，自给式呼吸装置对于在封闭空间中的存活至关重要。