国产重口老太和小伙乱,国产精品久久久久影院嫩草,国产精品爽爽v在线观看无码 ,国产精品无码免费专区午夜,国产午夜福利100集发布

Programme Introduction 節(jié)目簡介

Traditionally, many of us gained knowledge of the world by referring to encyclopedias. Now more and more of us favour their online equivalent such as Wikipedia. But can you really compare the two? Vicki and Oliver investigate.

以前我們會通過百科全書來增長知識，而如今越來越多的人開始利用網(wǎng)絡(luò)中的百科全書，也就是維基百科全書。跟隨 Vicki 和 Oliver 去看個究竟。