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- 2015年5月1日 (五) 08:06 (差异 | 历史) . . (+3,167) . . 新 RaceCreed419 (以“Today's grandfather clocks are the descendents of William Clement's time from 1670. He had discovered that a lengthier pendulum meant more a-ccurate timekeeping. The...”为内容创建页面) (当前)