51：我看到一个白色的水柱如此之高以致于我都不敢相信我的眼睛。(a tower of water)
52：为了不丢掉工作，TOM对这个事故保持沉默。(keep quiet about)
53：有人提请我不要忘了我的诺言。(remind sb of sth)
54：不仅爱因斯坦所有的一切都被没受了，而且他的德国公民权也被剥夺了。
55：这些机器的使用将加快工作的速度。(speed up)
參考答案:51.I saw so high a tower of water that I can't believe my eyes.
52.TOM kept quiet about it to avoid losing the jod.
53.Someone reminded me of forgeting my promise.
54.Not only all things of Einstein has been confisacted,but also his German citizen's right has been deprived.
55.Using those mechines will speed up work.
