cage shaft

例句：

1. 1. The bird was struggling to free itself from the cage shaft.
   那只鸟挣扎着要从笼柄中挣脱出来。
2. 2.The engineer carefully removed the cage shaft to inspect the mechanism.
   工程师小心翼翼地移除笼柄来检查这个机构。
3. 3. The cage shaft is designed to prevent escape and ensure safety for the animals.
   笼柄的设计是为了防止逃脱并确保动物的安全。