have a firm understanding or knowledge of; be on top of | handle effectively |
be careful or certain to do something; make certain of something | be in charge of, act on, or dispose of |
verify by using a duplicate register for comparison | watch and direct |
handle and cause to function | carry on or function |
maintain influence over (others or oneself) skillfully, usually to one's advantage | succeed in doing, achieving, or producing (something) with the limited or inadequate means available |
exercise authoritative control or power over | achieve something by means of trickery or devious methods |
lessen the intensity of; temper; hold in restraint; hold or keep within limits | be successful; achieve a goal |
check or regulate (a scientific experiment) by conducting a parallel experiment or comparing with another standard | |
place under restrictions; limit access to by law | |