// 易错点3：必须先判断stack2.length0，再访问stack2.at(-1)（避免栈空时取到undefined）
Meanwhile, dozens of employees at Google and OpenAI, both competitors of Anthropic, signed letters backing Amodei’s stances. And outside Anthropic’s San Francisco headquarters, words of support appeared in chalk on the sidewalk, according to a post on X.
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Lex: FT's flagship investment column
Today's actuators, even the state-of-the-art ones, are still largely made from metals, hard plastics and electronics. But there are other ideas around. Tolley and his colleagues have been working on a very different approach.
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