dab hand
noun /ˌdæb ˈhænd/
/ˌdæb ˈhænd/
(British English, informal)- a person who is very good at doing something or using something
能手；高手 - He's a dab hand at cooking spaghetti.
他是煮意大利面条的高手。 - She's a dab hand with a paintbrush.
她是绘画能手。
词源early 19th cent.: of unknown origin. - He's a dab hand at cooking spaghetti.