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

　　貴族須宣誓效忠國(guó)王。

　　Many towns often found it politic to change their allegiance.

　　很多城鎮(zhèn)經(jīng)常發(fā)現(xiàn)改變擁戴對(duì)象才是上策。

　　The constitution requires members of parliament to take an oath of allegiance

　　憲法規(guī)定，議員必須宣誓效忠。

　　The police are the only civil servants who have to swear allegiance to the Crown

　　警察是唯一要宣誓效忠君主的公務(wù)員。

　　The allegiance of uncommitted voters will be crucial

　　未表態(tài)的選民支持誰將是至關(guān)重要的。