The EU has set strict limits on pollution levels.

欧盟对污染程度订下了严格的限制。

The government has set strict limits on public spending this year.

今年，政府对公共开支规定了严格的限额。

The EU has set strict limits on levels of pollution.

欧盟对污染程度作了严格的限制。

The government has set strict limits on levels of pollution of factories.

政府对工厂的污染程度作了严格限制。

But it can't work without very strict limits.

但如果没有严格的限制，它就不能工作。