盘根究底

lit. to examine roots and inquire at the base (idiom); to get to the bottom of sth

plate / dish / tray / board / hard drive (computing) / to build / to coil / to check / to examine / to transfer (property) / to make over / classifier for food: dish, helping / to coil / classifier for coils of wire / classifier for games of chess

root / basis / classifier for long slender objects, e.g. cigarettes, guitar strings / CL:條|条[tiao2] / radical (chemistry)

to investigate (sth) thoroughly / to get to the bottom of

after all / to investigate / to study carefully / Taiwan pr. [jiu4]

(equivalent to 的 as possessive particle)

background / bottom / base / end (of the month, year etc) / remnants / (math.) radix / base