Zhè / kǒu / lǎo / jǐng / duō / nián / méi / yǒu / táo / jǐng / ， / shuǐ / zhì / yǐ / jīng / biàn / chà / le / 。

这口老井多年没有淘井，水质已经变差了。

This old well has not been cleaned for many years, so its water quality has deteriorated.