hái / zi / men / zài / gōng / yuán / lǐ / hé / yì / zhī / jīn / máo / xún / huí / quǎn / kāi / xīn / de / wán / le / hěn / jiǔ

孩子们在公园里和一只金毛寻回犬开心地玩了很久。

The children happily played with a golden retriever in the park for a long time.