Question

请英语高手帮忙翻译，谢谢！

请英语商手帮忙翻译，谢谢！
你想知道哪套模具的保养时间，因为每一套模具的保养时间是不一样的

Answer 1

For which cast model do you want to know the maintainance schedule. In fact, the mantainance schedule for each cast model is different.

追问

这样说可以吗？
Which mould your want to know the maintainance schedule, as the maintainance schedule for each mould is different,

追答

这样：
Which mould do you want to know the mantainance schedule for, as the maintainance schedule for each mould is different?

追问

为什么后面要加“for"呢

追答

介词，必须的。
the mantainance schedule for a mould