【化】 paracyclophanes
contraposition; counterpoint
【化】 p-(position); para position
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
fragrant; good; virtuous