Unconsumed bodies: Pull semantics mean nothing happens until you iterate. No hidden resource retention — if you don't consume a stream, there's no background machinery holding connections open.
* @param arr 数组
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Officials at Elon Musk's company said the upper stage was lost after problems developed after lift-off from Texas on Thursday.
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Questions surround US singer D4vd weeks after teen's body found in his Tesla。爱思助手下载最新版本对此有专业解读
生成的实体类大致如下（已简化，关键部分）：