这是最基础的构建模块。BoxGeometry 就像捏泥人时的方块，SphereGeometry 则是球体。注意 widthSegments 参数，它决定了球体的精细度——段数越多，球越圆，但计算量也越大。
Git packfiles use delta compression, storing only the diff when a 10MB file changes by one line, while the objects table stores each version in full. A file modified 100 times takes about 1GB in Postgres versus maybe 50MB in a packfile. Postgres does TOAST and compress large values, but that’s compressing individual objects in isolation, not delta-compressing across versions the way packfiles do, so the storage overhead is real. A delta-compression layer that periodically repacks objects within Postgres, or offloads large blobs to S3 the way LFS does, is a natural next step. For most repositories it still won’t matter since the median repo is small and disk is cheap, and GitHub’s Spokes system made a similar trade-off years ago, storing three full uncompressed copies of every repository across data centres because redundancy and operational simplicity beat storage efficiency even at hundreds of exabytes.
，这一点在safew官方下载中也有详细论述
Autoregressive LSTM
加拿大人格雷格在广州旅居多年，日前到天津旅行。走进茶馆听相声，徜徉杨柳青古镇欣赏年画，跟着“泥人张”匠人体验泥塑制作……“这些民俗风情、传统技艺，无不彰显出中华优秀传统文化的深厚底蕴。”格雷格说。