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
I'm thirty.
我三十岁。
I have a dog, but it's very quiet.
我有一只狗，不过它很安静。
Mary has written ten letters today.
马力今天写了十封信。