leading-in tube

例句：

1. 1. The engineer used a leading-in tube to help the machine move smoothly.
   工程师使用一个导气管帮助机器顺畅移动。
2. 2. The medical team inserted a leading-in tube into his chest to relieve pressure.
   医疗团队将一根导气管插入他的胸腔以减轻压力。
3. 3. The scientist developed a new type of guiding tube that could detect bacteria in the body.
   科学家开发了一种新型的引导管，可以检测身体内的细菌。