"Over the years, the transistor has replaced the vacuum tube, and color television has superseded black and white. The introduction of satellite techniques in recent years has accelerated the speed and quality of communications.
隨著時代的推進，收音機由真空管進步到電晶體，電視由黑白發展到彩色，而近年來人造通訊衛星的引進，更大幅度提高了傳播的速度和品質。