1. 作证：bear witness to 作证 | bear witness 作证 | bear 熊

2. 作证, 证明：be chargeable with libel 可能被控犯诽谤罪 | bear witness 作证;证明 | bearer 持信人;持票人;持有人

1. give testimony in a court of law

    Synonym: testifyattesttake the stand

2. provide evidence for

    e.g. The blood test showed that he was the father
           Her behavior testified to her incompetence

    Synonym: testifyproveevidenceshow