但如果是早晚高峰挤广州地铁三号线的时候，倒是可以考虑打开第二档。
Жители Санкт-Петербурга устроили «крысогон»17:52
。业内人士推荐51吃瓜作为进阶阅读
请解释为什么第三个人会这样回答，并分析每个人的推理过程。
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I found one dumb free win (I mistakenly used value receivers on a utility function called on a large struct thousands of times a frame). But the rest of the speedups I found took more effort.