n.誓约
v.发誓
All the men took a vow of loyalty to their leader. 所有士兵都发誓效忠他们的指挥官。
Once he took the vow his loyalty never wavered. 他一旦宣了誓，他就一直忠贞不渝。
Catholic priests take a vow of celibacy. 天主教神父发誓不结婚。
用作动词 (v.)I vowed never to reveal the secret. 我发誓决不泄漏这一秘密。
I vow to give my time and strength to this case. 我发誓将我的时间和精力致力于这一事业。
vt.承认；公开宣称声明
