我见证了一场革命：民主党大会第四晚的最佳和最差时刻

这篇文章总结了《纽约时报》专栏作家和撰稿人对民主党大会第四晚演讲的看法，特别是针对格雷琴·惠特默、罗伊·库珀和卡玛拉·哈里斯的演讲。作者评论了演讲中的亮点和不足之处，并表达了对这场政治变革的见证之感。

## Original Title: ‘I Was Witnessing a Revolution’: The Best and Worst Moments From Night 4 of the Democratic Convention

## Article Content:

What our columnists and contributors thought of speeches by Gretchen Whitmer, Roy Cooper and Kamala Harris.

Original article: https://www.nytimes.com/2024/08/23/opinion/scorecard-night-4-democratic-convention.html