オペレーションシステムだったら
operēshonshisutemudattara
1. If it were an operating system.; When it is an operating system.
Noun
#245741
1. If it were an operating system.; When it is an operating system.
1. if it's the case
1. system
1. operation
1. operation
1. automatic lock
2. automatic door-locking system
1. systems
1. geographic information system; GIS
1. not be found
1. filing system