dú shū xū yòng yì, yī zì zhí qiān jīn
读 书 须 用 意， 一 字 值 千 金


When reading, do not let a single word escape your attention; one word may be worth a thousand pieces of gold.

解释 ( paraphrase )
读书的时候必须专心一意，不要放过以一个字，有的字非常重要，真是可以说价值千金。
这天谚语告诉我们：学习要专心致志。弄懂弄通每一个字词。只有这样读书，才能够有所收获。

This proverb stresses the fact that study requires undivided attention. No single word should be passed over before we fully understand it. only in this way can study be rewarded.

用意：专心一意。
         Whole hearted.

造句 ( example )
读书须用意，一字值千金。读书一定要奋力刻苦用心。