We were determined that this should never be allowed to happen again.

我们下决心不让这样的事情再发生。

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They are determined that this should never be allowed to happen again.

他们下决心不让这样的事情再发生。

youdao

Congress and regulators vowed it will never be allowed to happen again.

FORBES: Financial Reforms Become Ever More Silly

It must never be allowed to happen again.

BBC: NEWS | UK | Scotland | Alexander makes election apology

When she herself runs for re-election next year, she wants to tell voters that, having staked hundreds of billions of euros to bail out weaker euro countries, such a thing will never be allowed to happen again.

ECONOMIST: Charlemagne