The last MP3 patent
The final MP3 patent has expired, marking the end of the format's patent protection. This means MP3 technology is now freely available for use without licensing restrictions.
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Norway has tested its first driverless bus in regular traffic without a safety driver. If successful, the autonomous buses will be available to passengers starting in May.
日本铁路系统的高效与卓越源于其独特的历史发展路径、技术创新、运营管理理念以及文化因素的综合作用，使其成为全球铁路运输的典范。
跳表有什么用处？
1.5跳表是一种概率性数据结构，通过多层索引实现O(log n)时间复杂度的查找、插入和删除操作，在并发编程和内存数据库等场景中比平衡二叉搜索树更具优势。