"And didn't you swear allegiance to this country when you became a citizen?" she asked.

“当时你没宣誓对这个国家效忠么？”她问。

youdao

Barons had to swear an oath of allegiance to the king.

贵族须宣誓效忠国王。

《牛津词典》

After getting burned once or twice for failing to cover some base, they develop a fool-proof routine to prevent that from happening again, then swear their eternal allegiance to it.

在某些地方上闯过一两次祸之后，他们就会制定出一个易于执行的例程去防止类似事件再次发生，然后发誓会永远拥护它。

youdao

Whereas Mr Sharif and Ms Bhutto packed the supreme court with their supporters, General Musharraf sacked half its judges for refusing to swear allegiance to him.

ECONOMIST: Too much for one man to do

There can be a non-English Archbishop of Canterbury as long, at the present time, as long as that person can swear allegiance to Her Majesty the Queen because of the nature of the establishment.

BBC: News Online

Every politician must swear allegiance and submission to the law.

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