【医】 Dollinger's ring
antrum; sinus
【医】 antra; antro-; antrum; burrow; sino-; sious
circles; forest; woods
case; division; metre; square; standard; style
【计】 lattice
family name; surname
annulus; hem in; link; loop; ring; surround
【计】 ring up; toroid
【化】 ring
【医】 annuli; anulus; band; circle; circulus; cycle; cyclo-; gyro-; loop; orb
ring; verge