化石燃料(如煤和石油)属于有限资源。The fossil fuels (coal and oil) are finite resources.用煤作燃料的火力发电站的成本有望降低。The cost of electricity from coal-fired stations is expected to fall.当局已经敦促人们储备燃料。The authorities have urged people to stock up on...
他用这个节目的录像带教授英语。He uses tapes of this program to teach English.他甚至将记录他以前伟绩的录像带通通锁起来了。He had even locked away all the videos of his previous exploits.采用了演示及播放电影和录像带的形式,以起到教育作用。Demonstrations, films, and videotapes are show...