Getting children to play together cooperatively depends less on their personal social skills and more on what they are doing – especially if they are not friends

Getting children to play together cooperatively depends less on their personal social skills and more on what they are doing – especially if they are not friends – a study shows.

2026年2月14日 · 赵敏 · 来源：dev资讯

2011 年，淘宝网的单日成交额就已经达到了 43.8 亿元，三年后，京东和阿里巴巴就先后在美国上市，这意味着线上电商从补充渠道变成了一条能跑出巨头的主赛道。

Both nations are planning to land at the Moon's south pole - and are competing for the best spots to build their lunar bases.

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Account creation is required just to submit a report—an annoying friction layer when you’re dealing with multiple vendors. I posted my case and waited.

If we think about this algebraically, what we really want to do is express the input pixel as the weighted sum of palette colours. This is nothing more than a linear combination of palette colours with weights :

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