switchback

之字形道路、回头弯、急转弯

The road climbs the mountain in a series of steep switchbacks.

这条路以一连串陡峭的之字形弯道爬上山。

之字形步道、折返山径

We hiked up twenty switchbacks before reaching the ridge.

我们走了二十个折返弯道才抵达棱线。

大起大落、反复转折比喻

Her career has been a switchback of triumphs and setbacks.

她的职涯充满成功与挫败的大起大落。

蜿蜒而上、呈之字形前进

The trail switchbacks sharply up the face of the cliff.

这条步道沿著崖壁陡急地蜿蜒而上。