They prevented complete testing of some Olympic buildings and structures before the games started.

奥运会开幕前，他们曾妨碍对某些奥运建筑进行全面检测。

Today, most of the buildings and structures that once stood in the area are long gone.

如今，曾经立于该地的大多数建筑物和结构早已不复存在。

There are regulations like the International  Building Code in the US, which lays out standards that buildings and structures must  adhere to, although local variations do apply.

美国有《国际建筑规范》等法规，其中规定了建筑物和构筑物必须遵守的标准， 尽管当地有所不同。