fā shēng / hóng zāi / hòu / dāng dì / bǎo ān bù duì / xié zhù / jū mín / chè lí / wēi xiǎn dì qū

发生洪灾后，当地保安部队协助居民撤离危险地区。

After the flood, the local security forces helped residents evacuate the dangerous area.