swear an oath 宣誓
swear to tell the truth 发誓说真话
swear in 就职宣誓
swear at 咒骂
swear by 信奉，笃信
1. The witness swore for the defendant, stating he was not there.
证人出庭为被告作证，声称他当时不在场。
2. He will swear for the authenticity of this document.
他将对该文件的真实性进行担保。
3. I can swear for her character; she is very honest.
我可以为她的品行作证；她非常诚实。
A: Do you have anyone who will swear for your alibi?
A：你有谁能为你的不在场证明作证吗？
B: Yes, my neighbor is willing to swear for it.
B：有的，我的邻居愿意为此作证。
1) 为……作证，宣誓证明
2) 担保，保证
3) 正式宣誓支持
1. 为……作证；担保
e.g.
He swore for the accuracy of his report.
他对该报告的准确性进行了担保。
verb phrase
1. To give evidence under oath on behalf of someone or something; to vouch for.
2. To guarantee the truthfulness or validity of a statement or person.
Synonym: vouch for, stand surety for