Hái / zi / men / zài / gōng / yuán / lǐ / bǐ / sài， / kàn / shéi / de / yáo / kòng / chē / pǎo / de / gèng / kuài。

孩子们在公园里比赛，看谁的遥控车跑得更快。

The children raced in the park to see whose radio-controlled car could go faster.