例句與造句

1. Now , a strong change in telecommunication market is on the way : the main profit is changed from circuit - switch voice service to multimedia packet service
   目前電信業(yè)務(wù)正從以基本語音服務(wù)為主轉(zhuǎn)變?yōu)橐哉Z音、數(shù)據(jù)和視頻綜合業(yè)務(wù)。
2. It's difficult to find circuit-switched voice service in a sentence. 用circuit-switched voice service造句挺難的