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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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The Starship upper stage separated from its Super Heavy booster nearly four minutes into flight as planned.
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事后经过复盘，我终于看清了这场骗局的全貌。我做的所有手机安全设置，在骗子“指导”母亲自行解除的那一刻，就全部失效了。技术防线的最大问题，在于它无法抵抗人性的弱点。