Question

你，任何人不可取代英文怎么说？

Answer 1

you are irreplaceable (by anyone).
No one can replace you.

Answer 2

Anyone irreplaceable

Answer 3

you are the only one and no one will replace your position

Answer 4

任何人都不能取代，那就是“唯一的，独一无二”的意思。
我觉得可以简单的说：

You are the only one。