switchbacks

英 [ˈswɪtʃbæks] 美

n.  (公路或铁路坡道上的)之字形路线; (公路或铁路的)不断起伏的路线; (陡坡路上的)急转弯，180度的转弯
switchback的复数

柯林斯词典

  1. N-COUNT (公路的)之字形坡路，不断起伏的路线;陡坡
    A switchback is a road which rises and falls sharply many times, or a sharp rise and fall in a road.
    1. ...a dizzy bus ride over a switchback road.
      乘公共汽车驶过一段颠簸起伏的公路时感到头晕目眩
  2. N-COUNT (有连续急转弯的)上山公路;(公路上的)急转弯
    A switchback is a road which goes up a steep hill in a series of sharp bends, or a sharp bend in a road.
    1. Several hundred yards beyond the first switchback in the road, he came to the second bend.
      过了公路上第一个急转弯几百码处，他又遇到了第二个急转弯。
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双语例句

  1. Tracking the year 2012 in autos reveals an unusual number of straightaways that were transformed into hairpins and switchbacks by human folly.
    回溯2012年的汽车业，我们发现，许多车企原本可以走上一马平川的康庄大道，但最后却由于人为因素，把坦途走成了“山路十八弯”。
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