v be shown or be found to be
v establish the validity of something, as by an example, explanation or experiment
v provide evidence for
v prove formally; demonstrate by a mathematical, formal proof
v put to the test, as for its quality, or give experimental use to
v increase in volume
v cause to puff up with a leaven
v take a trial impression of
v obtain probate of
a established beyond doubt
prove的过去分词