Ccsso
abbr. common channel signaling switching office 共路信令交换局; Council of Chief State School Officers 重点州学校管理者委员会
🗣️ 情景例句
The leader takes the first ten cards
指挥拿出上面的十张牌，
Don't try judge young people by their appearance.
不要从外表去判断年轻人。
Have they ever been there before?
他们以前去过那儿吗？