hái zi men / kàn dào / yóu lè chǎng / de / dà mén / dǎ kāi / le / yī gè gè / huān xīn què yuè

孩子们看到游乐场的大门打开了，一个个欢欣雀跃。

The children were overjoyed one by one when they saw the amusement park gates open.