os

os

名词 os:

a mouth or mouthlike opening

a hard brittle blue-grey or blue-black metallic element that is one of the platinum metals; the heaviest metal known

同义词：osmium, atomic number 76

(computer science) software that controls the execution of computer programs and may provide various services

同义词：operating system

the left eye

同义词：oculus sinister

rigid connective tissue that makes up the skeleton of vertebrates

同义词：bone