脱落

由于年久失修，老旧居民楼外墙的部分瓷砖出现了松动脱落的安全隐患。

yóu yú nián jiǔ shī xiū, lǎo jiù jū mín lóu wài qiáng de bù fèn cí zhuān chū xiàn le sōng dòng tuō luò de ān quán yǐn huàn.

Due to years of disrepair, some tiles on the exterior walls of old residential buildings have become loose and fallen off, creating safety hazards.