Heavy rain in the region led to flooding, which was further exacerbated by a nearby dam breaking, causing water to rush through the streets.

该地区的大雨导致了洪水，而附近的一座水坝坍塌使情况进一步恶化，导致水流淹没街道。

And the machines go up and down along the length of the dam, breaking up and then re-pouring cement to try to ensure the stability of the dam's foundation.

而这台机器沿大坝的长度不断上升下降, 破坏后重新浇注水泥试图确保大坝地基的稳定。