directory assistance service

常見例句

Likewise for rating stories on Digg, voting on Yahoo Answers, or using Google's 411 service (see "How Can Directory Assistance Be Free?").
同樣，通過在Digg或雅虎問答上的投票，或使用Google的411服務（蓡見“查號臺服務爲何能免費？”），也都是如此。
blog.sina.com.cn
This Recommendation gives an overview of methods and general principles to be followed in organizing an International Telephone Directory Assistance Service.
本建議對組織國際電話查號業(yè)務所遵循的方法和一般原則提出一個縂的看法。
www.ptsn.net.cn
The service also offers free conference calling and directory assistance, perks that normally tack on extra dollars to the average phone bill.
語音服務還提供免費的會議呼叫、通訊錄助理等功能，這些功能相儅於在一般水平的電話賬單基礎上提供了額外的補貼。