Machie line

例句：

1. 1. The machie line in the garden is perfectly straight.
   花园里的马奇线完全笔直。
2. 2. They used a machie line to create a perfect circle.
   他们使用一条马奇线来创造一个完美的圆形。
3. 3. The machie line was the only way to reach the top of the mountain.
   马奇线是到达山顶的唯一途径。