Dogs act like toddlers when you need help - but cats just watch. Scientists compared 3 groups: pet dogs, cats, and human toddlers in an experiment where a human parent hides and pretends to look for an object. 75% of dogs and children helped. Cats only helped if it was in their personal interest.

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2026-02-26 00:00:00:0本报记者 王伟健 一座江南小城何以集聚560多家德企——

(and thanks to Matthew Miller for reviewing and providing feedback on this post)

长春高新回应，推荐阅读51吃瓜获取更多信息

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回顾历史，早期智能硬件热潮中，租赁与渠道扩张都曾出现过短期红利。但真正持续盈利的公司，往往掌握核心技术或平台规则。

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美国：企业自救，市场化封闭生态