to testify
01
証言する, 宣誓供述する
to make a statement as a witness in court saying something is true
Intransitive
例
Witnesses are called to testify about what they saw during the accident.
事故中に見たことについて証言するために証人が呼ばれます。
02
証言する, 証明する
to serve as evidence or proof that something exists or is true
Intransitive: to testify to sth
例
The document will testify to the accuracy of the transaction records.
その文書は取引記録の正確性を証明するでしょう。
