plighted

I was simple enough to think that because my faith was plighted to another there could be no danger in my being with you.

我想得太简单了，认为我已经把我的忠诚给予了别人，我和你在一起不会有什么危险了。

Let this ring be the token of your plighted faith, and the memorial of your mutual and unending love.

愿这戒指成为你忠诚不朽之爱的象徵，愿上帝恩待你们，记念你们。

plighted their loyalty to the king;

向国王宣誓他们的忠诚；

Again and again we plighted troth,

一次又一次我们宣誓我们的忠诚