在有限的时间和精力下，我们必须注意我们要寻找什么并关注什么。
With limited time and attention, we have to be careful what we look for and what we pay attention to.
因为我要在考试前有限的时间内学习，所以我决定集中大部分时间和精力去复习数学技巧和做练习题。
Because I had a limited time to study before taking the test, I decided to focus most of my time and energy on reviewing math skills and doing practice problems.
那只意味着这个特殊的计划——不管是博客，一本电子书，一封信，一篇小说或者一部诗集——最终会在你时间和精力都有限的情况下成为首选。
It just means that this particular project - whether it's a blog or an ebook or a newsletter or a novel or a poetry collection - is the one that's going to win out if you're short on time and energy.
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