外刊阅读与 AI 精读
从感兴趣的外刊开始,用中英对照、随手查词与个性化 AI 精读读懂真实文章。带原句的生词本和间隔复习,让阅读留下积累;也支持博客 RSS 与电子书。
Pace needs two or more snapshots. This launch has 1, so velocity and momentum read as unmeasured rather than zero.
A source that found nothing is a measurement. A source that has not run is a gap. Neither means the launch lacks the thing.