The concept of the digital library appeared at the beginning of 90's in the 20th century, however up to now the academic circles has no extensive common comprehension for digital library definition.

数字图书馆的概念产生于20世纪90年代初，然而学术界至今还没有一个有广泛共识的统一界定。

youdao

It's simply material found on page fifteen of your textbook but let's review it. We say this is a beginning course so we assume no previous knowledge.

这是你们教材十五页上的一些简单材料,我们复习一下,我们说这是个入门课程,所以假设之前你们没有任何相关知识

耶鲁公开课 - 聆听音乐课程节选

Alexandria on the northern Mediterranean coast is to become the country's first no smoking city, beginning with a ban on lighting up in government buildings.

BBC: Egypt introduces Alexandria smoking ban

And it's been clear from the beginning that Obama has no intention of getting stuck with the check.

CNN: Obama's no-win options in Syria

"If no leader emerged, we would wait on God's timing before beginning a ministry, " says Warren.

FORBES: Purpose Driven