Few collections could claim to have never been disturbed, yet the innumerable volumes that surrounded him had remained inviolate for seven centuries.
很少有书籍可以宣称,没有被翻阅过,但是那无数的书籍环绕着他,至少有七个世纪被被动过。
Yet, people began to understand how electricity works only a little more than two centuries ago. Nature has apparently been experimenting in this field for million of years.
人们只是在两个世纪前一点才开始了解电的使用原理,自然界却显然在这方面经历 过了数百万年。
Alcoholism has been around for centuries, yet no one has discovered an easy way to prevent it.
酗酒这个问题已经存在几百年了,但是至今为止,人们还未找到一种能够轻松阻止它的方式。
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