If you declare something, you state officially and formally that it exists or is the case.

如果你声明某事，你公开且正式地表明它是存在的或就是那种情况。

youdao

On the other hand, most of the Spring.NET code is still in a pre-release state, with only the core DI container and AOP being officially released in late 2005.

另一方面，大多数Spring.NET代码仍然处于预发布状态，只有核心的DI容器和AOP在2005年末发布了一个正式版。

youdao

It was not until 1995 that former French President Jacques Chirac became the first French leader to officially admit the state had played an active role in the Holocaust.

VOA: standard.2010.04.10

And there were cases where Bretons tried to name their children Breton names and the French State said, uh-uh,pas possible, because it wasn't officially French.

还有一些布里多尼人,想要给他们的孩子取布里多尼的名字,但是法国政府说,想都别想,这并非官方法语

耶鲁公开课 - 1871年后的法国课程节选

Given that he was officially invited by the president of Eritrea and given that Eritrea is not a state party, one could argue that there is no risk at all on President al-Bashir."

VOA: standard.2009.03.23

The result was that IBM opened an integrated plant in Lexington, Kentucky five years before the state officially integrated.

FORBES: An Open Letter to the Journal: Why CSR Is Good For Shareholders and Society

Until recent decades, the church operated in the shadows of Cuba's revolution, which had declared the state officially atheist until 1992.

WSJ: Pope Seeks Greater Freedom for Church in Cuba

The army itself has a heavy presence in the state: officially, it has 17, 000 troops there, but unofficial estimates go up to 70, 000.

ECONOMIST: A fresh start for Chiapas