"the dorsal fin is the vertical fin on the back of a fish and certain marine mammals"
"the abaxial surface of a leaf is the underside or side facing away from the stem"
The dorsal and anal fins.
出自： T. Pennant
A dorsal ridge of slate-coloured rock.
Midwives sometimes prefer to have women in a dorsal or modified lithotomy position for examination.
出自： S. Kitzinger