Open hotbain opened 6 years ago
https://www.day2up.cn/2018/01/14/effecitve_3_%E7%94%A8%E7%A7%81%E6%9C%89%E6%9E%84%E9%80%A0%E5%99%A8%E6%88%96%E8%80%85%E6%9E%9A%E4%B8%BE%E5%BC%BA%E5%8C%96Singleton%E5%B1%9E%E6%80%A7/
https://www.day2up.cn/2018/01/14/effecitve_3_%E7%94%A8%E7%A7%81%E6%9C%89%E6%9E%84%E9%80%A0%E5%99%A8%E6%88%96%E8%80%85%E6%9E%9A%E4%B8%BE%E5%BC%BA%E5%8C%96Singleton%E5%B1%9E%E6%80%A7/