affidavit

/ˌæf.əˈdeɪ.vɪt/

名词

（法庭上作证用的）书面证词
The witness signed an affidavit swearing to tell the truth about what they saw on the night of the crime.
证人签署了一份宣誓书，发誓要说出他们在犯罪当晚所看到的真相。