zhè / zuò / jiàn / zhù / shǐ / yòng / qiǎn / sè / níng / huī / yán / zuò / wéi / wài / qiáng / cái / liào

这座建筑使用浅色凝灰岩作为外墙材料。

This building uses light-colored tuff as its exterior wall material.