钻圈

钻圈	zuān quān	jumping through hoops (as acrobatic show)
钻	zuàn	variant of 钻
钻	zuān	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
钻	zuàn	drill; auger / diamond
圈	juān	to confine / to lock up / to pen in
圈	juàn	livestock enclosure; pen; fold; sty
圈	quān	circle; ring; loop (CL:个) / classifier for loops, orbits, laps of race etc / to surround; to circle