duō / nián / guò / qù / le / tā / réng / rán / qīng / chu / de / jì / de / lǎo / shī / de / yīn / róng / xiào / mào

多年过去了，他仍然清楚地记得老师的音容笑貌。

Many years have passed, but he still clearly remembers his teacher's voice and appearance.