translation.en: Nobody would have said 50 years ago that apartheid would have gone in 1990, or that the Berlin wall would have fallen at the turn of the '80s and '90s, or that polio could be eradicated, or perhaps 60 years ago, nobody would have said a man could gone to the Moon.
translation.zh: 五十年前没人会说 南非的种族隔离在1990年被消除 或是柏林墙会在八九十年代之际被推倒 或者小儿麻痹症能被根除 又或许六十年前没人会说 人类能登上月球