9. I'll call back later.
我稍后再打。
還能這樣說：
I'll ring again later.
I'll call her later.
應用解析：
later on 后來，過些時候；
no later than 不遲于；
sooner or later 遲早
10. Sorry, the number you dialed is not answered for the moment, please redial later.
對不起，您撥打的電話暫時無法接通，請稍后再撥。
還能這樣說：
Sorry, the number you dialed is busy now, pleae dial again later.
Sorry, you can't get the person you dialed at this time. Please redial later.
應用解析：
big number 要人，大亨；
by numbers 依靠數量上的優勢；
in round figures 以整數表示、大概，總而言之；
make one's number 報到，拜訪
11. How can I get in touch with him?
我怎樣才能和他取得聯系？
還能這樣說：
How do I connect him?
Can you tell me his contact information?
12. I have no idea when he'll be back.
我不知道他何時回來。
還能這樣說：
I don't know when.
I wasn't told about it.
應用解析：
at the idea of 一想起……就；
great idea 高見，妙策；
buck one's idea up 更加清醒，更加警惕