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- 2015年5月1日 (五) 07:56 (差异 | 历史) . . (+2,883) . . 新 LeonRobles904 (以“Today's grandfather clocks will be the descendents of William Clement's time from 1670. He had found that a longer pendulum meant more accurate timekeeping. Browse h...”为内容创建页面) (当前)