オペレーションシステムなら
operēshonshisutemunara
1. If/when operating system
Noun
#1000567
1. If/when operating system
1. system
1. operation
1. operation
1. systems
1. automatic lock
2. automatic door-locking system
1. geographic information system; GIS
1. filing system
1. System's; Of the system
1. In the system; Within the system