分为工业、建筑、纺织服装和环境景观设计等四个子题。
These works are divided into 4 crossheads of industry, architecture, textile and environmental and scenically design.
望着美丽的雪花，我的心情轻松愉悦，刚才那令人费解的题，一下子有了思路，很快就做完了，爷爷直夸我聪明！
Looking at the beautifulsnow, I feel happy, just the puzzling problem, a way of thinking, it was soon done, my grandpa zhikuasmart!
这道题的要求是在字符串中找出最长回文子串。
Given a string s, find the longest palindromic substring in s.
这道题的要求是在字符串中找出最长回文子串。
Given a string s, find the longest palindromic substring in s.
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