"And didn't you swearallegianceto 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。
2
Barons had toswear an oath of allegianceto the king.
贵族须宣誓效忠国王。
《牛津词典》
3
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 allegianceto it.