《黄帝阴符经》曰：“瞽者善听，聋者善视，绝利一源，用师百倍，三返昼夜，用师万倍。”元王道渊注曰：“三返有二说：外三返乃眼、耳、口，内三返乃精、炁、神也。”
在关闭5天后，互联网服务上周三重返埃及。
Internet service returned last Wednesday in Egypt after a five-day shutdown.
生命中有三件事会一去不返，时间，机会和说出的话。
Three things in life that once gone, never come back Time, Opportunity, and Words.
说话前要三思，否则无心的言论可能会返过来对你造成伤害。
Think twice before talking, otherwise you'll make careless comments which could come back to hurt you.
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