New officers take an oath of allegiance to their country.新上任的军官宣誓效忠自己的国家。The constitution requires MPs to take an oath of allegiance.宪法规定,议员必须宣誓效忠。The constitution requires members of parliament to take an oath of allegiance.宪法规定,议员必须宣誓效忠。He took an oath of allegiance to his adopted country.他宣誓效忠于自己移居的国家。