edge of blade

to open (transitive or intransitive); (of ships, vehicles, troops etc.) to start; to turn on; to put in operation; to operate; to run; to boil; to write out (a prescription, check, invoice etc.); (directional complement) away; off; carat (gold); abbr. for Kelvin, 开尔文; abbr. for 开本, book format

to depart; to leave

to feel happy; to rejoice; to have a great time; to make fun of sb

to begin; beginning; to start; initial

knife blade; crucial point

sharp blade

naked sword