inside cord

例句：

1. 1. The engineer carefully unwound the inside cord from the machine.
   工程师小心翼翼地从机器中解开了内部绳索。
2. 2.The boat was securely fastened with astrong inside cord.
   这艘船用一根结实的内部绳索牢固地系住了。
3. 3. The climberused an inside cord to secure the ropeto the anchor.
   攀岩者使用内部绳索将绳子固定在锚点上。