英语语法分析

A zigzag metal roof, also incorporated into the Oppenheimer Park design, now acts as a unifying design element throughout the district.

一个之字形的金属屋顶也被纳入奥本海默公园的设计中，现在成为整个地区统一的设计元素。

The heaters have water-filled steel tubes that zigzag in front of a reflective surface, which concentrates the sun's rays on the tubes.

这种加热器装有充满水的钢管，在反射面前头曲折布置，反射面将太阳光聚焦在钢管上。

Planes must zigzag from one ground beacon to the next, and ascend and descend in steps at each stage obtaining permission from the ground.

飞机从一个地面信标到下一个信标曲折飞行，在每一阶段都要经过地面的许可才能上升和下降。