测试场景：给出一个 200 行的混乱 Python 爬虫脚本，要求重构为面向对象结构，并输出 Mermaid 类图。
target.toString = function () {
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That feeling of relative security has now been punctured by the violence of the past six months.
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Research suggests mating direction bias between Neanderthals and humans
· 徐丽 · 来源：tutorial资讯