划出

They've set aside a small area as a children's playground and staked it off.

他们一小块用于建造儿童游乐场, 并在周围打上木桩。

They measured off a half-acre plot for a house lot.

他们一块半英亩来作房屋基。

The lightning made a zigzag in the sky.

闪电在天空一道Z字形。

Stoneware is tough and cannot be scratched.

粗器很硬, 不会被痕迹。

The rainbow described an arc in the dark sky.

彩虹在昏暗天空一道圆弧。

The builders have marked off a corner of field ready for the new building.

建筑工人已经把这块一个角落来盖新房。

The children squared off the sidewalk to play hopscotch.

孩子们在人行道上方格，做“跳房子”游戏。