我正在填 I751 准备申请条件绿卡转无条件绿卡。 我看到I751 的上有一条：
5. Affifavits sworn to or affirmed by at least two people who have known both of your since your conditional residence was granted and have personal knowledge of your marriage and relationship. (Such persons may be required to testify before an immagration officer as to the information contained in the affidavit.) The original affidavit must be submitted and also contain the following information regarding the person making the affidavit: his or her full name and address; date and place of birth; relationship to you or your spouse, if any; and full information and complete details explaining how the person acquired his or her knowledge. Affidavits must be supported by other typs of evidence listed above.
这条具体是什么意思？是不是要找两个人， 各自写个证词， 说明他们怎么认识我们， 证明我们是夫妻关系， 然后签名？
我还得跟他们要身份证明的复印件？ 一般都找什么人啊？