hái / zi / men / zài / gōng / yuán / lǐ / pái / duì / liū / huá / tī / wán / de / fēi / cháng / kāi / xīn孩子们在公园里排队溜滑梯,玩得非常开心。The children lined up to go down the slide in the park and had a great time.