respiratory siphon

例句：

1. 1. The respiratory siphon is used to collect air from the lungs and expel it through the mouth.
   呼吸管用于从肺部收集空气并通过嘴巴排出。
2. 2.During the experiment, the respiratory siphon was used to measure the amount of oxygen in the blood.
   在实验中，呼吸管被用来测量血液中的氧气含量。
3. 3. The respiratory siphon was designed to prevent the spread of germs during surgery.
   呼吸管的设计旨在手术过程中防止病菌传播。