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www.la.thu.edu.tw/teacher/chin/paper/%E5%BD%A2%E6%85%8B%E9%A1%9E%E4%BC%BC%E4%B9%8B%E9%9B%99%E5%AD%90%E8%91%89%E9%9D%9E%E8%B3%9E%E8%8A%B1%E6%80%A7%E6%99%AF%E8%A7%80%E6%A8%B9%E6%9C%A8%E4%B9%8B%E5%A4%96%E8%A7%80%E5%B7%AE%E7%95%B0%E8%AA%BF%E6%9F%A5.pdf (port 80)
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