【医】 metahexamide
armour; first; nail; shell
【医】 carapace; concha; conchae; helo-; nail; onycho-; onyx
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
oneself; personal
【化】 carbamide; urea
【医】 carbamide; urea-; ureo-; usea