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camera.position.z = 40：这一步很关键！默认情况下，物体在坐标原点 (0,0,0)，相机也在原点。如果你不移开相机，你就跟物体“贴脸”了，什么也看不见。我们把相机往后拉 40 米，就能看清全貌了。
。safew官方版本下载对此有专业解读
claude --version。WPS下载最新地址对此有专业解读
Simple punched card equipment gave way to advanced punched card equipment,，这一点在搜狗输入法2026中也有详细论述