Nature, Published online: 25 February 2026; doi:10.1038/s41586-026-10137-y
A put option is a contract that gives its owner the right to sell an asset at a future date at a predetermined price.
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以携程为例，2025年，其投入29亿元用于服务保障，包括重大灾害保障金、全球SOS平台（覆盖27家医疗援助机构、100万家医疗机构）以及7x24小时多语言客服。
Anthropic was the only AI company cleared for use in classified settings—until Elon Musk’s xAI agreed to let the Pentagon use its AI in lawful situations. Google and OpenAI are used in unclassified settings but are in talks with the Defense Department about classified work.
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