The road started to turn in bends and switchback . 公路变成了那种“之”字形的盘山路。
Even at this hour it was acrawl with men , builders pushing up a new switchback stair to join the remnants of the old 这么早长城上就挤满了人;工匠们正在将一段新旋梯接补到残破的旧楼梯上。
From the arch we climb up a precipitous switchback road , and through a magnificent , mile long , tunnel that has been blasted into the navajo sandstone 大的莫哈维沙漠,翠绿的约书亚树,点缀在一望无际的黄沙中,别有一番情趣。