¥»¤ëªºÅª®Ñ·|©w©ó8¤ë11¤é±ß7:30¦bùÀsÄ_§Ì¥S®aÁ|¦æ¡C½Ð¨Æ¥ý¾Åª"Approachability Principle" ¤Î "Foxhole Principle"¡C

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