钻圈

jumping through hoops (as acrobatic show)

to confine / to lock up / to pen in

pen (pig) / a fold

circle / ring / loop / classifier for loops, orbits, laps of race etc / CL:個|个[ge4] / to surround / to circle

circle; ring; loop (CL:個|个[ge4]) / classifier for loops, orbits, laps of race etc / to surround; to circle

variant of 鑽|钻[zuan4]

to drill / to bore / to get into / to make one's way into / to enter (a hole) / to thread one's way through / to study intensively / to dig into / to curry favor for personal gain

an auger / diamond