Ibs
abbr. 情报库系统（Intelligent Building System）
🗣️ 情景例句
Thank you, Grandpa.
谢谢你， 爷爷。
Generally speaking, a contract cannot be changed after it has been signed by both parties.
一般来讲，合同一经双方签订就不得更改。
Will you please sweep the floor and tidy the classroom every day?
请你们每天都打扫地板、整理教室，好吗？