this.arr = []; // 存储所有历史价格，通过索引快速获取对应价格
目前，中国空间站已在轨部署和实施267项科学与应用项目，涉及空间生命科学与人体研究、微重力物理和空间新技术等领域，取得多项国际领先的应用与技术成果，部分成果已实现转移转化和推广应用，显著推动我国空间科学与应用快速发展。
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During its Unpacked event today, Samsung announced three new Galaxy S-series phones as well as the latest generation of its earbuds, the Galaxy Buds 4 and Galaxy Buds 4 Pro. Pre-orders are now open and the new devices are set to ship March 11. As expected, this year’s models aren’t drastically different from last year’s, but all the phones are equipped to better handle the Galaxy AI experiences such as Now Nudge that offers suggestions based on your activities and a more conversational assitant in Bixby (or Gemini or Perplexity depending on your preferance).
10) How do we buy an NFTs?There are many places to buy digital assets, like opensea and their policies vary. On top shot, for instance, you sign up for a waitlist that can be thousands of people long. When a digital asset goes on sale, you are occasionally chosen to purchase it.