The science of mathematics presents the most brilliant example of how pure reason may successfully enlarge its domain without the aid of experience.
数学科学呈现出一个最辉煌的例子，表明不用借助实验，纯粹的推理能成功地扩大人们的认知领域。
All that is important is how pure it is when you drink it.
最重要的就是，当你喝的时候，水有多纯净。
No matter how pure the water looks, I prefer not to drink it.
不管这水看起来多么纯净，我不喜欢喝它。
How PURE, Platero, and how beautiful is this flower by the wayside!
路边这朵花多么纯净，多么美丽，普儿！
How PURE, Platero, and how beautiful is this flower by the wayside!
路边这朵花多么纯净，多么美丽，普儿！
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