translation.en: And after the quake, we started bringing in earthquake engineers to figure out why the buildings collapsed, to examine what was safe and what wasn't.
translation.zh: 在地震后，我们带领地震工程师进入震区， 以弄清楚什么导致了建筑坍塌， 并检查那些没有坍塌的建筑是否安全。