The machine has been made easier for it

网友回答

这样理解比较简单：
1.The machine is easy to operate.
2.The machine has been made easier for it (指machine.是被操作的) to be operated （被动）
3.The machine has been made easier for people （人.操作） to operate..（主动）
======以下答案可供参考======
供参考答案1:
be+ adj. +to be done不定式的被动结构 这个机器被制造，操作起来很简单。