She proclaimed herself an expert.

她自封为专家。

《新英汉大辞典》

She proclaimed her independence and left home.

她宣布独立并离开了家。

youdao

She proclaimed herself "a really proud defender of the Second Amendment" and then worked her way to saying she would have voted for the universal background check bill.

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"We've got our mojo working, " she proclaimed to cheers.

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In 1999, she was proclaimed Queen, the world's youngest at age 28.

CNN: Queen Rania most inspirational leader of 2008