Demonstrations, films, and videotapes are shown for your edification.采用了演示及播放电影和录像带的形式，以起到教育作用。The researcher then studied the videotapes to analyse the matches in detail.研究人员研究了录像,然后详细分析了比赛.Others include notes from 92 ...
不用说，所有这些都是从电台报道中采集来的二手材料。All this, needless to say, had been culled second-hand from radio reports.这份材料里只有一些已公开的、非保密性质的信息。The material consisted only of already published, unclassified information.把你需要的工具和材料开一张单子。Make a ...