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城市的穷人就像树的根:看不见,但对生存至关重要。
It's not just about writing code; it's about solving problems.
Courage consists not in hazarding without fear; but being resolutely minded in a just cause.
Efficiency without sustainability is just short-term profit disguised as progress.
解释:有了过错一定要悔改,干了坏事肯定会觉得害怕。