1. I swear I will faithfully execute my office and my motherland. 我发誓我将忠于我的职守和我的祖国。
2. You must swear him to silence. 你一定要他发誓保持沉默。
3. But I could swear by your expression. 但是我可以从你的表情发誓。
英英解释
v.
1. utter obscenities or profanities
2. to declare or affirm solemnly and formally as true
3. promise solemnly; take an oath
4. make a deposition; declare under oath
5. have confidence or faith in