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, 開爾文|开尔文[Kai1 er3 wen2]

abbr. for 開本|开本[kai1 ben3], book format