On a more personal level, to learn English well is a solemnvow that we make to ourselves.
在一个较为个人的层面上，学好英语也是我们对自己作出的一份庄严承诺。
2
That would have been a far more solemnvow, one that would probably have caused the wedding to grind to a mortifying halt10.
那样的誓言对于我们来说可要严肃得多了，而且结果很可能是婚礼气氛压抑，最后不欢而散。
3
SINCE 1949, Article 5 of the North Atlantic Treaty has bound NATO members to a solemnvow: an armed attack on one of the alliance shall be treated as an attack against all.