Interexchange channel
[計] 內部交換信道
?? 詞語組成解析
[計] 局際電話業務
??? 情景例句
Oh, yeah?
噢 ，做什么？
How long will the sale last?
折價銷售多久？
Last week, my four-year-old daughter, Sally, was invited to a children's party.
上周，我4歲的女兒薩莉被邀請去參加一個兒童聚會。