Siris
[计]= Scanning InfraRed Inspection System,扫描（式）红外检查系统
🗣️ 情景例句
Front Desk. Can I help you?
前台，需要我为您服务吗？
Turn up your radio please.
请你把收音机开响一点儿。
It is fairly clear that sleeping period must have some function,
很清楚，睡眠必然具有某种作用。