I simply want your opinion about a hydraulic stamping machine which has got out of gear.

我只不过是想请教您有关一台水力冲压机齿轮脱开的事。

In fact, mass-produced hats are made with the same principles in mind, but with hydraulic machines instead of by hand.

事实上，大规模的帽子生产也会用到同样的流程。不过是使用液压机而非手工。