这种说法含糊无用，但不一定是错误的。

That is unhelpfully vague but not necessarily wrong.

youdao

异常不一定是错误。

All exceptions are not errors.

youdao

这样的政策不一定是错误的，尤其对于那些仍然贫穷的国家，他们的金融系统很容易被国际热钱地肆意游动而破坏。

There's nothing necessarily wrong with such a policy, especially in a still poor country whose financial system might all too easily be destabilized by volatile flows of hot money.

youdao