Smds
[计] 交换式多兆位数据传送业务
🗣️ 情景例句
That's alright. You're a lot of help.
没关系。你帮了很大的忙。
He lived in California until he was seventeen.
他生活在加利福尼亚直到他十七岁。
What's the time?
几点了？