极为贵重的 meaning in Chinese

priceless

With the development of broadcast and television within several decade , a large amount of precious tv program materials have being accumulated , these are compound matter composed of pictures , voice and movies which play a vital part in development of our society
广播电视经过几十年的发展，积累下来许多珍贵的电视节目资料。这些资料是对社会发展有着重要意义的图文声像复合媒体，是一笔不可复得的、极为贵重的资产。