tā / yì / zhí / jì / de / péng / yǒu / dāng / nián / de / bāng / zhù / hòu / lái / zhōng / yú / yǒu / jī / huì / jié / cǎo / xián / huán / de / bào / dá / duì / fāng

他一直记得朋友当年的帮助，后来终于有机会结草衔环地报答对方。

He always remembered his friend's help and finally had a chance to repay it.