yóu yú / dì jī / bù láo / xīn jiàn / de / dà lóu / zài / shī gōng / zhōng / fā shēng / le / kuǎ tā

由于地基不牢，新建的大楼在施工中发生了垮塌。

Due to the weak foundation, the newly built building collapsed during construction.