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准时地
(against, for, to)证明 zhèngmíng
I. testify [ˈtestıfaı] VB intr
testify
(against, for, to)证明 zhèngmíng
testify
作证 zuòzhèng
testify to her innocence
II. testify [ˈtestıfaı] VB trans
testify
证明 zhèngmíng
testify
证实 zhèngshí
testify
表明 biǎomíng
Present
Itestify
youtestify
he/she/ittestifies
wetestify
youtestify
theytestify
Past
Itestified
youtestified
he/she/ittestified
wetestified
youtestified
theytestified
Present Perfect
Ihavetestified
youhavetestified
he/she/ithastestified
wehavetestified
youhavetestified
theyhavetestified
Past Perfect
Ihadtestified
youhadtestified
he/she/ithadtestified
wehadtestified
youhadtestified
theyhadtestified
PONS OpenDict

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Examples from the PONS Dictionary (editorially verified)
Monolingual examples (not verified by PONS Editors)
The video features the band in a raucous courtroom filled with spectators and tabloid reporters, testifying by singing the song into the court's witness microphones.
en.wikipedia.org
He continued to testify in a large number of cases.
en.wikipedia.org
He testified that school staff has a right to do anything to students outside of bodily harm if they fail to obey.
en.wikipedia.org
However, she testified, she was unable to talk about her war experiences with her family.
en.wikipedia.org
He brags that nobody will dare testify against him.
en.wikipedia.org