tubing string

例句：

1. 1. The engineer used a tube to connect the two pipes.
   工程师使用一根管子将两根管子连接起来。
2. 2.The doctor inserted a tube into his patient's stomach to help him breathe.
   医生将一根管子插入病人的胃中，帮助他呼吸。
3. 3. The scientist used a tube to collect samples from the deep sea.
   科学家使用一根管子从深海收集样本。