探驪得珠

to pluck a pearl from the black dragon (idiom, from Zhuangzi); fig. to pick out the salient points (from a tangled situation) / to see through to the nub

to explore / to search out / to scout / to visit / to stretch forward

black horse / jet steed / good horse / legendary black dragon

to obtain / to get / to gain / to catch (a disease) / proper / suitable / proud / contented / to allow / to permit / ready / finished

structural particle: used after a verb (or adjective as main verb), linking it to following phrase indicating effect, degree, possibility etc

to have to / must / ought to / to need to

bead / pearl / CL:粒[li4],顆|颗[ke1]