When someone testifies in a court of law, they give a statement of what they saw someone do or what they know of a situation, after having promised to tell the truth.
近义词
witness , declare , certify , state
双语例句
例： Several eyewitnesses testified that they saw the officers hit Miller in the face.
几个目击者作证称他们看到那些警察打了米勒的脸。
例： Eva testified to having seen Herndon with his gun on the stairs.
伊娃作证说曾看见赫恩登在楼梯上拿着枪。
例： He hopes to have his 12-year prison term reduced by testifying against his former colleagues.
他希望通过检举从前的同事来缩短自己的12年刑期。