LatheGeometry（车削几何体）：
Cruz Beckham, the youngest son of David and Victoria, is trying to forge a path as the frontman in a rock band, and they started their first headline tour this week. What's more, they're not terrible.
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1. 找出最大数，确定最大位数d
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The Royal Artillery is facing criticism after it emerged they are refusing public access to an “extraordinary object” looted by the British army in the 19th century from the Asante people in modern-day Ghana.