af·fi·da·vit
noun/ˌæfəˈdeɪvɪt/
/ˌæfəˈdeɪvɪt/
(law)- a written statement that you swear is true, and that can be used as evidence in court
宣誓书；宣誓陈述书 - to make/swear/sign an affidavit
作书面保证；立宣誓书；签署宣誓书 - They swore affidavits and put further material before the court.
他们宣誓了宣誓书，并向法庭提交了更多材料。
Word Originmid 16th cent.: from medieval Latin, literally ‘he has stated on oath’, from affidare. - to make/swear/sign an affidavit