предик.
(на что-л. )
разг. clever (at)
good (at) кто во что горазд – each in his own way он на все горазд – he can do anything
he's a Jack of all trades идиом.
в знач. сказ. разг. : кто во что ~ each in his own fashion and as hard as he can
он на это ~ he`s a dab at that, that`s just what he`s good at