zhè / kuài / niǎn / tuó / yòng / le / hěn / duō / nián / biǎo / miàn / yǐ / jīng / mó / de / hěn / guāng / huá / le

这块碾砣用了很多年，表面已经磨得很光滑了。

This roller has been used for many years, and its surface has become very smooth.