Dragonfly
来自Big Physics
wiktionary
From dragon + fly.
etymonline
dragonfly (n.)
common name of a neuropterous predatory insect of the group Libellulina, with a long, slender body, large eyes, and two pairs of large, membranous wings, 1620s, from dragon + fly (n.). An older name for it was adderbolt (late 15c.), for its shape, also devil's darning-needle.
