The wish and will of the people are not stoppable.

人民的心愿和意志是不会停止的。

Of course nobody is all stoppable or unstoppable in principle.

当然，原则上，没有人是可以阻挡或者不可阻挡的。

In other words, ageing is not only stoppable but also reversible.

换句话说就是衰老不仅可以阻止，而且可以逆转。