tā / yǐ / qián / zuò / guò / lèi / sì / de / xiàng / mù / xiàn / zài / chǔ / lǐ / zhè / gè / wèn / tí / yǐ / jīng / qīng / chē / shú / lù / le

他以前做过类似的项目，现在处理这个问题已经轻车熟路了。

He has worked on similar projects before, so handling this problem is now easy for him.