jiān / yìng / de / qiáng / miàn / kě / néng / shǐ / zǐ / dàn / tiào / dàn / , / yīn / cǐ / fù / jìn / de / rén / dōu / xùn / sù / chè / lí / le坚硬的墙面可能使子弹跳弹,因此附近的人都迅速撤离了。A hard wall could cause bullets to ricochet, so everyone nearby quickly left the area.