FirstFT: the day's biggest stories
音画不同步是AI视频的另一大顽疾。Seedance 2.0利用其底层的Seed 2.0大模型，通过一种被称为“双分支扩散变换器”的架构，实现了原生视频与音频（包括对白、音效、环境声）在同一生成过程中的精确同步。
。业内人士推荐heLLoword翻译官方下载作为进阶阅读
// ⚠️ 易错点2：循环条件写left <= n-1（会导致left+1越界），或把<=写成<（漏判相等的有序情况）
The trade-off is performance. Every syscall goes through user-space interception, which adds overhead. I/O-heavy workloads feel this the most. For short-lived code execution like scripts and tests, it is usually fine, but for sustained high-throughput I/O, it can matter.