translation.en: Narrator: The most dramatic and shocking footage shows whole sections of the crowd -- hundreds of people -- apparently rocking from side to side in unison, not only with each other, but with the bridge.
translation.zh: 旁白：最动荡的一次震动中 成百上千人 一起从桥的一侧到另一侧， 并不只是所有人一起动，桥也在一起震动。