例句：
這對(duì)雙胞胎可以在操場(chǎng)上打羽毛球。
The twins were allowed to play badminton on the playground.
下午在操場(chǎng)上有一場(chǎng)大型足球比賽。
On afternoon there was a big football match on the playground.
學(xué)生們?cè)诓賵?chǎng)上賽跑。
The students ran races on the playground.