《盗梦空间》（Inception）大家都看了吗？小编们很是喜欢这部电影。细心的童鞋有米有注意到，当莱昂纳多等一伙人们进入最后一层梦境（雪山）时，很短的一个镜头滑过，惊现“CCTV”！啊哈~《盗梦空间》里居然出现了CCTV字样，这让很多观众兴奋不已啊。
介个CCTV当然不是中国中央电视台(=China Central Television)的缩写，那是什么呢？
其实，CCTV这个缩写共有两个意思。1. 闭路电视（Closed Circuit Television）；2. 中国中央电视台（China Central Television）。
Closed Circuit Television 比较详细的解释是：
Closed-circuit television (CCTV) is the use of video cameras to transmit a signal to a specific place, on a limited set of monitors.
It differs from broadcast television in that the signal is not openly transmitted, though it may employ point to point (P2P), point to multipoint, or mesh wireless links. CCTV is often used for surveillance in areas that may need monitoring such as banks, casinos, airports, military installations, and convenience stores. It is also an important tool for distance education.