孩子们在围栏内的游乐场玩耍。

The children are playing in the ___enclosure of the playground.

请查看随信附上的会议议程。

Please review the meeting agenda included as an ___enclosure with this letter.

花园的围栏完工后，整个区域感觉更加私密了。

After the ___enclosure of the garden was finished, the whole area felt more private.